Ionic polymer ion transport. Medical search. Frequent questions

Polymerized ionic liquids (PILs) are of great interest in the scientific community due to their potential applications as advanced electrolytes in modern electrochemical devices. (aps.org)
Understanding the ion transport mechanism in PILs is critical for designing highly conducting polymer electrolytes. (aps.org)
Results of molecular dynamics simulations of a number of binary and single ion conductor electrolytes will be presented. (aiche.org)
Electrolytes were either doped with the LiTFSI salt or had TFSI-anion attached to a polymer or oligomer. (aiche.org)
Mechanisms of ion transport in carbonate-based and oligoether-based liquid electrolytes will be compared with those in polyether-based linear and comb-branched binary polymer electrolytes and ionic liquids. (aiche.org)
Interestingly, we found that exchange of solvent molecules in the carbonate-based liquid electrolytes and pyrrolidinium-based ionic liquids significantly contributes to lithium transport, while in oligoethers lithium moves primarily by vehicular motion with its first coordination shell. (aiche.org)
But they are hard to make, expensive and are not environmentally friendly," said Seung Woo Lee, associate professor in the George W. Woodruff School of Mechanical Engineering at Georgia Tech. Solid polymer electrolytes continue to attract great interest because of their low manufacturing cost, non-toxicity and soft nature. (materialstoday.com)
However, conventional polymer electrolytes do not have sufficient ionic conductivity and mechanical stability for reliable operation of solid-state batteries. (materialstoday.com)
Georgia Tech engineers have now solved common problems with rubber electrolytes, such as slow lithium-ion transport and poor mechanical properties. (materialstoday.com)
These unique characteristics of the rubber electrolytes prevent the growth of lithium dendrites and allow for faster moving ions, allowing reliable operation of solid-state batteries even at room temperature. (materialstoday.com)
The work described in this thesis was carried out as part of a project to explore the use of solid polymer electrolytes as pH electrodes, the properties of which would be superior to those of the fragile glass membranes traditionally used. (bl.uk)
Our discussion mostly involves following electrolytes, including solid polymer electrolyte, inorganic solid oxide and sulfide electrolytes as well as composite electrolytes. (frontiersin.org)
Up to now, the RT ionic conductivities of some systems have approached or even surpassed that of liquid electrolytes. (frontiersin.org)
Battery tests carried out at 80 °C have shown excellent cycling performance and capacity retention even at high rates, never tackled by ionic liquid-free polymer electrolytes. (preprints.org)
This study demonstrates the importance of polar groups in electrolytes in maintaining a fast and stable Li + transport, which can be applied to other solid-state batteries. (oaepublish.com)
Recently, many groups have designed electrolytes with high ionic conductivity and high mechanical strength to improve the ionic conduction of electrolytes and the stability of the electrode/electrolyte interface [ 1 - 8 ] . (oaepublish.com)
These electrolytes include ceramic electrolytes and solid polymer electrolytes (SPE). (oaepublish.com)
Although ceramic electrolytes generally exhibit high ionic conductivity and high strength, they often show poor contact with electrodes, which affects the Li + transport in the electrode/electrolyte interface [ 1 , 6 ] . (oaepublish.com)
In contrast, flexible polymer electrolytes can well contact with electrodes, but they exhibit relatively low room-temperature ionic conductivity and low mechanical strength [ 9 - 12 ] . (oaepublish.com)
A common method to improve the ionic conductivity of polymer electrolytes is to introduce plasticizers (such as Pyr 13 FSI, hydroxypropyl trimethylammonium bis (trifluoromethane) sulfonimide chitosan salt (HACC-TFSI), etc. ) or nanofillers (such as Ai 2 O 3 , TiO 2 -TiN, Li 7 La 3 Zr 2 O 12 , etc. ) [ 11 , 13 - 17 ] . (oaepublish.com)
The plasticizers and nanofillers reduce the crystallinity of the polymer electrolytes, thus resulting in high ionic conductivity [ 14 - 17 ] . (oaepublish.com)
An alternative way to realize high ionic conductivity is to prepare polymer-in-salt electrolytes (the content of lithium salt exceeding 50 wt%) [ 8 - 20 ] . (oaepublish.com)
He adds that the material is better than any previously recorded polymer conductor: "We found this ion conductor achieved a record high ionic conductivity among all solid polymer electrolytes. (cosmosmagazine.com)
While current commercial lithium-ion batteries work well, their liquid electrolytes are usually highly flammable materials, and they also make the batteries more prone to short-circuiting. (cosmosmagazine.com)
The dynamic crosslinking of the UPy units in the SLIC allow for a unique decoupling of mechanical properties and ionic conductivity, which is not commonly observed in polymer electrolytes. (dnsalias.com)
An instant challenge in the development of polymer electrolytes (PEs) for lithium batteries is the trade-off between sacrificing ion transport for improved mechanical properties. (ncku.edu.tw)
To further enhance the battery performance, titanium dioxide nanoparticles (TiO 2 NPs) are dispersed into the component to prepare composite polymer electrolytes (CPEs). (ncku.edu.tw)
To further enhance the battery performance, titanium dioxide nanoparticles (TiO2 NPs) are dispersed into the component to prepare composite polymer electrolytes (CPEs). (ncku.edu.tw)
Motivated from the synergistic potential from organic and inorganic components, hybrid polymer electrolytes (HSEs) has emerged as an ideal composition for SSB. (researchsquare.com)
Copolymers useful as components of polymer electrolytes are provided in which the copolymer comprises at least one block sequence represented by formula (I): A-(T)-B (I) wherein A is a vinyl aromatic block, T is a tapered copolymer region copolymerized from a vinyl aromatic monomer and an oligo(oxyalkylene) acrylate monomer and B is an oligo(oxyalkylene) acrylate block. (justia.com)
The invention relates to block copolymers useful as components of polymer electrolytes in electrochemical devices such as rechargeable lithium batteries and the like. (justia.com)
Most contemporary lithium ion batteries utilize liquid-based electrolytes. (justia.com)
Although organic solvents generally offer improved ionic conductivity compared to solvent-free electrolytes, liquid electrolytes based on organic solvents are volatile at elevated temperatures, rendering them thermally and electrochemically unstable. (justia.com)
Such nanostructured block copolymers permit simultaneous control over both ionic transport and mechanical strength, thus providing an enticing opportunity to fabricate designer materials for polymer electrolytes. (justia.com)
The present invention is directed to block copolymers with tapered interfaces between the copolymer blocks which are useful in polymer electrolytes, particularly solid polymer electrolytes containing one or more conductive salts. (justia.com)
The tapered interfaces can impact the glass transition temperatures (T g s) in block copolymer electrolytes, thus affecting the polymer chain mobility and the ion transport. (justia.com)
We find that processing conditions such as drying temperature, which varies solvent content, play a critical role in developing polymer electrolytes that demonstrate optimal electrochemical performance. (syr.edu)
In fact, we found this ion conductor achieved a record high ionic conductivity among all solid polymer electrolytes. (theorkneynews.scot)
Today's lithium ion batteries, which are widely used in everything from cellphones to cars, have electrolytes made from lithium salt dissolved in a liquid organic solvent. (theorkneynews.scot)
Most of the solid electrolytes investigated so far are ceramic materials, which are great at conducting ions but they're also thick, rigid and brittle. (theorkneynews.scot)
Previous efforts to suppress lithium dendritic growth include the use of physical barriers, such as physical barriers including ion conducting polymer and physical barriers including solid electrolytes. (justia.com)
Although solid electrolytes have been able to reduce dendrite growth, they are poor lithium ion conductors at room temperature and require operation at elevated temperatures. (justia.com)
New ionic liquid-based polyoxadiazole electrolytes for hydrogen middle-and high-temperature fuel cells. (cnrs.fr)
Favorably, the ionic liquid electrolytes currently used in Al batteries are non-flammable. (cleantechnica.com)

The unique properties of ionic liquids (ILs) have made them promising candidates for electrochemical applications. (osti.gov)
Polymerization of the corresponding ILs results in a new class of materials called polymerized ionic liquids (PolyILs). (osti.gov)
Researchers are working to replace the liquids commonly used in today's lithium ion batteries with solid materials. (theorkneynews.scot)
Polymeric ionic liquids (i.e. (utexas.edu)
ion-conducting materials that exhibit the thermal and electrochemical stability of ionic liquids and the mechanical properties of polymers. (utexas.edu)
EBRAHIMI M., KUJAWSKI W., FATYEYEVA K., KUJAWA J. A review on ionic liquids-based membranes for middle and high temperature polymer electrolyte membrane fuel cells (PEMFCs). (cnrs.fr)
SZCZEPANSKI P., GUO H., DZIESZKOWSKI K., RAFINSKI Z., WOLAN A., FATYEYEVA K., KUJAWA J., KUJAWSKI W. New reactive ionic liquids as carriers in polymer inclusion membranes for transport and separation of Cd(II), Cu(II), Pb(II) and Zn(II) ions from chloride aqueous solutions. (cnrs.fr)
KOBZAR Y.L., FATYEYEVA K. Ionic liquids as green and sustainable steel corrosion inhibitors: recent developments. (cnrs.fr)

The substantially enhanced ionic conductivity of the membrane arises from the facile release of the lithium ions to the solvent and the extensive interconnectivity of the meso/macro-pores that provides a smooth passage for the solvated lithium ions to transport. (rsc.org)

During the symposium, the latest advances in the field will be presented and discussed, with a focus on wearable/implantable device design, neuromorphic devices and biosensors, novel biocompatible/biodegradable materials, and modelling of the biological-electronic interface as well as ionic-electronic mixed conduction. (uni-heidelberg.de)
Solid-state lithium (Li)-sulfur (S) batteries are promising secondary batteries because of their high energy density and high safety, but their practical application is severely hindered by poor Li-ions (Li + ) transport in batteries due to low ionic conduction of the electrolyte and unstable electrode/electrolyte interface. (oaepublish.com)
Continuous paths through inter-VA-CNT channels allow fast ion transport, and high electrical conduction of the aligned CNTs in the composite electrodes lead to fast device actuation speed (>10% strain/second). (typeset.io)
Moreover, multi-ion conduction in the high concentration range (>2.0 M) further reinforces the similarity between single-walled carbon nanotubes and protein ion channels. (columbia.edu)
We report a gel polymer electrolyte (GPE)-based on polyvinylidene fluoride (PVDF) for calcium ion conduction. (syr.edu)
Anion exchange membrane (AEM), generally composed of a polymer with covalently tethered ionic groups, is the central component of the fuel cell serving as the electrolyte, conducting hydroxide ions from cathode to anode, where fast ionic conduction is directly related to power output. (wustl.edu)

However, high molecular weight materials, which offer high ionic conductivity and mechanical strength in electrolyte systems, tend to decrease the overall processability of the materials. (justia.com)
The role of morphology was demonstrated with block copolymer nanoscale structures providing superior ionic conductivity and mechanical performance compared to random copolymers. (elsevierpure.com)

Though PolyILs offer the possibility to combine the high conductivity of ILs and the high mechanical strength of polymers, their conductivities are typically much lower than that of the corresponding small molecule ILs. (osti.gov)
12 Molar conductivities of the most often used BF 4 − ions in acetonitrile (ACN) are remarkably lower than those of protons in aqueous media. (rsc.org)
Dual electrode and AC impedance measurements revealed that both the electronic and ionic conductivities of the copolymers increased with increasing MeTh content. (mun.ca)
However, AEMs currently used in fuel cells (H2 fuel cells and sodium borohydride fuel cells) exhibit ion poor transport properties at operation conditions of fuel cells, such as low hydroxide ion conductivities at 80 °C. Another concern with the use of AEMs in fuel cells is their stabilities in strong alkaline environment. (wustl.edu)
To solve the first problem, a triblock copolymer-based polymer (polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene, SEBS) has been developed to synthesize AEMs with high ion conductivities by engineering a phase-separated morphology. (wustl.edu)

This unique structure results in high ionic conductivity, superior mechanical properties and electrochemical stability. (materialstoday.com)
The polar urethane/urea groups of PU reduce the hopping energy barrier of Li + , which results in high ionic conductivity of 1.8 × 10 -4 S cm -1 (25 °C), high ion transference number of 0.54, and low activation energy of 0.39 eV. (oaepublish.com)

Anion exchange membranes facilitate ion transport in polymer electrolyte membrane fuel cells. (confex.com)

4. MIL-HDBK-17 provides guidelines and material properties for polymer (organic), metal, and ceramic matrix composite materials. (pdf4pro.com)
The author has contributed to research in topics: Electroactive polymers & Composite number. (typeset.io)
Recent advances in fabricating controlled-morphology vertically aligned carbon nanotubes (VA-CNTs) with ultrahigh volume fraction create unique opportunities for markedly improving the electromechanical performance of ionic polymer conductor network composite (IPCNC) actuators. (typeset.io)
A battery structure with a cathode, an electrolyte, and a lithium metal anode is coated with a composite coating including a mixture of a polymer and a reinforcing fiber. (justia.com)
The composite coating conducts lithium ions. (justia.com)
The composite coating may include a mixture of polymer and reinforcing fibers. (justia.com)
In one or more embodiments, the composite material includes a lithium ion conducting organic polymer and a reinforcing fiber. (justia.com)

The fabricated meso/macro-porous polymer membrane displays excellent high-temperature sustainability and wide electrochemical stability, important for battery safety and enhancement of device performance and longevity. (rsc.org)
The incorporation of the ionic liquid remarkably improves the thermal, ion-transport and interfacial properties of the polymer electrolyte, which, in combination with the wide electrochemical stability even at medium-high temperatures, allow high current rates without any appreciable lithium anode degradation. (preprints.org)
Poly(ionic liquid)s (PILs), which have advantages such as good chemical compatibility and electrochemical stability, is expected to lead the progress of next-generation energy technology. (ncku.edu.tw)

An ion-exchange membrane is a semi-permeable membrane that transports certain dissolved ions, while blocking other ions or neutral molecules. (wikipedia.org)
The idea was that the hydrophilic polymer (PEO) would interact with water molecules and ionic species, and the hydrophobic polymer (PVC) would serve as an inert matrix, intimately tangled with the hydrophilic polymer to prevent its diffusion into the aqueous solution phase. (bl.uk)
they use ions and molecules of varying sizes to transport charge. (uni-heidelberg.de)
Thanks to the unique combination of both electronic and ionic conductivity in some organic polymers and small molecules, it has recently become possible to translate signals between the two realms, leading to the birth of bioelectronics. (uni-heidelberg.de)
Inspired by KcsA K + channel with size of ~5.6 Å and homogenous distribution of carbonyl oxygens, herein, MXene nanosheets and EDTA molecules are used as building blocks to construct artificial ion channel membranes with the right channel size, similar binding sites, and tunable charge density (Fig. 1a ). (nature.com)

An ion-exchange membrane is generally made of organic or inorganic polymer with charged (ionic) side groups, such as ion-exchange resins. (wikipedia.org)
These safety issues have forced the industry to look at solid-state batteries, which can be made using inorganic ceramic materials or organic polymers. (materialstoday.com)
Most previous attempts to make solid-state battery conductors have either focussed on polymers like cellulose, which conduct poorly but integrate well with other battery components, or on inorganic materials like ceramics, which conduct well but often don't meet the physical requirements for batteries. (cosmosmagazine.com)
The lithium ions move in this organic solid electrolyte via mechanisms that we typically found in inorganic ceramics, enabling the record high ion conductivity," says co-author Professor Yue Qi, of the school of engineering at Brown University, US. (cosmosmagazine.com)
In the early days of SE research, high ionic conductivity was the top priority, exploiting the inorganic oxides to sulfides.9-18 Recently, long-term stability under harsh electrochemical environments have re-emerged as the next critical issue for a practical utilization. (researchsquare.com)
While a polymer matrix offers safe, lightweight and soft intimate contact/strong interfacial adhesion, highly ionic conductive inorganic SE fillers can be effectively integrated without burden for brittle ceramic processing. (researchsquare.com)
The lithium ions move in this organic solid electrolyte via mechanisms that we typically found in inorganic ceramics, enabling the record high ion conductivity," Qi said. (theorkneynews.scot)

The material has demonstrated several distinct advantages compared with previously reported polymeric ion conductors. (dnsalias.com)
The paper-thin material has an ion conductivity that is 10 to 100 times better than other polymer ion conductors, the researchers say. (theorkneynews.scot)

Incorporating nanoparticles in polymers has permitted to de-velop additional resistant packaging by minimum cost [25]. (pdf4pro.com)
Sili-cate and silica (SiO 2) nanoparticles, and chitosan gives polymer matrix stronger, fire resistance, and improved thermal proper-ties [26]. (pdf4pro.com)
The possibility of targeted change of the properties of ion exchange membranes by incorporation of various nanoparticles into the membranes is attracting the attention of many research groups. (hse.ru)

Carbonation occurs in presence of CO 2 due to its reaction with hydroxide ions, ultimately degrading the catalyst. (frontis-energy.com)

Homogeneous membrane surfaces can be modified to alter the membrane permselectivity to protons, monovalent ions, and divalent ions. (wikipedia.org)
Moreover, the transport and separation mechanisms of ions within sub-nanochannels modulated by local charge density remains elusive and an effective strategy to fabricate high-efficiency mono-/divalent ions selective membranes is yet to be developed. (nature.com)

The first one is the low ionic conductivity of solid electrolyte, which is several-orders-lower than that of liquid electrolyte at room temperature (RT). (frontiersin.org)
Developing solid electrolyte materials is critical to meet the performance demands of modern lithium ion batteries while providing increases in mechanical stability and safety. (dnsalias.com)

Ion-exchange membranes are therefore electrically conductive. (wikipedia.org)
Important examples of ion-exchange membranes include the proton-exchange membranes, that transport H+ cations, and the anion exchange membranes used in certain alkaline fuel cells to transport OH− anions. (wikipedia.org)
The so-called heterogeneous ion-exchange membranes have low cost and a thicker composition with higher resistance and a rough surface that can be subject to fouling. (wikipedia.org)
Ion-exchange membranes are traditionally used in electrodialysis or diffusion dialysis by means of an electrical potential or concentration gradient, respectively, to selectively transport cationic and anionic species. (wikipedia.org)
Exemplary applications of ion-exchange membranes utilized in electrodialysis and EDR include seawater desalination, industrial wastewater treatment of highly scaling waters, food and beverage production, and other industrial wastewaters. (wikipedia.org)
Ion exchange membranes: fundamentals and applications. (wikipedia.org)
Ion exchange membranes need to be able to mechanically stretch in the elastic region well above the in-plane swelling with water to withstand hygral stresses in an electrochemical device. (confex.com)
Fabrication of high-conductivity ion exchange membranes (IEMs) is crucial to improve the performance of non-aqueous vanadium redox flow batteries (NAVRFBs). (rsc.org)
In the present work, anion exchange membranes with high-conductivity were fabricated by aligning ion channels of the polymer electrolyte impregnated in porous polytetrafluoroethylene (PTFE) under electric fields. (rsc.org)
Common design principles and considerations for fabricating new ion exchange membranes for energy processes will be discussed. (nyu.edu)
This research seeks to explore the relationship between polymer backbone composition, water uptake, and conductivity to contribute to the development of high-performance, yet inexpensive, ion exchange membranes. (rpi.edu)
This will enable electrochemical energy devices, such as fuel cells and electrolyzers, that utilize ion-transporting membranes to become more economically viable routes for the production of cleaner and more sustainable energy.In this work, novel polymer backbones were designed, synthesized by anionic polymerization, functionalized by the post-polymerization addition of alkyl side chains with terminal ionic groups, and characterized as anion exchange membranes. (rpi.edu)
The anion exchange membrane properties, including ion conductivity and water uptake, of the quaternized polymer was then compared to quaternized polystyrene controls of similar ion content for a baseline comparison to a well-known and used polymer for anion exchange membranes. (rpi.edu)

Polymers - 2021. (cnrs.fr)

Jun 12, 2019 · also being used for attaining improved polymer composites. (pdf4pro.com)

High Electromechanical Response of Ionic Polymer Actuators with Controlled-Morphology Aligned Carbon Nanotube/Nafion Nanocomposite Electrodes. (typeset.io)
The researchers determined that aluminum-ion batteries using the electrodes they developed retain 88% of their capacity at 10C over 5000 cycles. (cleantechnica.com)

Charge screening experiments using either the addition of cationic or anionic polymers, divalent metal cations, or changes in pH reveal the enormous impact of the negatively charged carboxylates at the entrance of the single-walled carbon nanotubes. (columbia.edu)
Hence, there must be further research on increasing ionic conductivity and stability of anionic membranes for practical use of DEFC in alkaline conditions. (frontis-energy.com)

S. Sunjai Nakshatharan, Veiko Vunder, Inga Põldsalu, Urmas Johanson, Andres Punning, Alvo Aabloo (2018) Modelling and Control of Ionic Electroactive Polymer Actuators under Varying Humidity Conditions , Actuators . (ut.ee)

To this end, potentiometry was used to study ion transport in membranes which were composites of poly(vinyl chloride) and poly(ethylene oxide). (bl.uk)
The meso/macro-porous membrane is formed by a lithium poly[4-styrenesulfonyl(phenylsulfonyl)imide] polymer and serves as an electrolyte in lithium ion batteries. (rsc.org)
We will examine the effect of the nature and concentration of dynamic ionic crosslinks on the modulus and ionic conductivity of a model poly[(ethylene oxide)-stat-(allyl glycidyl ether)] functionalized with tethered imidazole ligands. (utexas.edu)
SELLAMI F., KEBICHE-SENHADJI O., MARAIS S., LANEL C., FATYEYEVA K. Novel Poly(Vinylidene Fluoride)/Montmorillonite Polymer Inclusion Membrane: Application to Cr(VI) Extraction from Polluted Water. (cnrs.fr)
By studying the redox properties of poly(3-vinyl-N-methylphenothiazine) in chloroaluminate-based ionic liquid, we have made a significant breakthrough by demonstrating for the first time a reversible two-electron redox process for a phenothiazine-based electrode material. (cleantechnica.com)

Here, we investigate, over a broad range of temperature and pressure, the ion dynamics of two PILs with different chain rigidity (flexible ethylene oxide vs . rigid vinyl-imidazolium) by using broadband dielectric spectroscopy. (aps.org)
The determined pressure coefficient of glass transition temperature and the activation volume of studied PILs indicate that the chain rigidity strongly affects their pressure sensitivity and, thereby, ion dynamics at high-pressure conditions. (aps.org)

The selectivity of an ion-exchange membrane is due to Donnan equilibrium and not due to physically blocking or electrostatically excluding specific charged species. (wikipedia.org)
The selectivity to the transport of ions of opposite charges is called its permselectivity. (wikipedia.org)
Membranes with high ion permeability and selectivity are of considerable interest for sustainable water treatment, resource extraction and energy storage. (nature.com)
a The ion selectivity filter in KcsA K + channel is a 5.6 Å channel composed of eight negatively charged oxygen atoms (PDB code 1K4C), which inspired us to design an MLM-EDTA with numerous negatively charged oxygen atoms and 6.0 Å two-dimensional channel. (nature.com)
We explore the factors governing the ion selectivity and permeation through single-walled carbon nanotubes by considering an electrostatic mechanism built around a simplified version of the Gouy−Chapman theory. (columbia.edu)

The electrolyte's job is to conduct lithium ions between a battery's cathode and anode. (theorkneynews.scot)
In it, they say they have developed an anode that consists of an organic redox polymer based on phenothiazine. (cleantechnica.com)

It was shown that membranes prepared by co-casting polymers from solution were indeed stable in water and that the properties could be changed by change in fabrication procedure which changed the microstructure. (bl.uk)
The size of these regions determine the transport properties of ions moving through the membrane. (bl.uk)
This cellulose and copper ion method combines the two properties, making something flexible and conductive. (cosmosmagazine.com)
MARBLE provides a new platform for interfacing functional materials and electronic devices with our body by answering fundamental questions about how soft functional materials interact with a biological environment, how ions are transported in polymeric systems ( e.g. , how molecular order, conformational arrangements and macroscopic properties affect ionic/electronic transport), how they can be rendered more biocompatible, and how smart, multifunctional interfaces can be created. (lcpo.fr)
Herein, we highlight the basic transport equations necessary to rationalize mixed transport and the multiscale materials properties that influence their transport coefficients. (ucsb.edu)
Dielectric relaxation spectroscopy (DRS) examined the ion-transport properties of ionomeric A-BC-A triblock copolymers and random copolymers with different compositions. (elsevierpure.com)
An international team finds new single-crystalline oxide thin films with fast and dramatic changes in electrical properties via Li-ion intercalation through engineered ionic transport channels. (mpg.de)
The MIPs are produced by various polymerization methods but in all cases specifi c interactions, molecular partitioning and polymer structure are key properties that we focus on. (lu.se)

However, efforts to describe the motion of ions or electrons separately within polymeric systems become inaccurate when both species are present. (ucsb.edu)

We have recently demonstrated new ion-conducting polymer membranes that have achieved excellent performance and long-lifetime stability in vanadium redox flow batteries, a leading technology candidate for deployment in renewable power networks and grid-scale energy storage systems with sizes ranging from 10s to 100s of megawatts. (nyu.edu)
The results indicate that the GPE exhibits high conductivity and good stability, making it a promising candidate for use in high-performance calcium ion batteries. (syr.edu)
The oxidative stability of the AEM has been evaluated ex situ by immersion in 1.5 M VO2+ + 3 M H2SO4 for 500 hours - the ionic conductivity remained constant over this timeframe. (wustl.edu)

ROGALSKY S., BARDEAU J.F., TARASYUK O., BABKINA N., CHERNIASKA T., FILONENKO M., FATYEYEVA K. New polymer electrolyte membrane for medium-temperature fuel cell applications based on cross-linked polyimide Matrimid and hydrophobic ionic liquid. (cnrs.fr)

In conventional lithium-ion batteries, ions move through a liquid electrolyte. (materialstoday.com)
Our results show that the concentration of free cations in the electrolyte is primarily coordinated with NMP as well as PVDF, generating a suitable network for ion transport, i.e., a liquid electrolyte encompassed within a polymer matrix. (syr.edu)

We find that the single-walled carbon nanotubes preferentially transported cations and that the cation permeability is size-dependent. (columbia.edu)

Characterization techniques included differential scanning calorimetry, ion conductivity, and water uptake. (rpi.edu)

HPO₄²⁻ is kinetically favoured, while Fe(CN)₆³⁻/⁴⁻ is thermodynamically favoured as the charge compensating counter ion in the copolymer. (mun.ca)
It was also found that Fe(CN)₆³⁻/⁴⁻ in the copolymer could not be replaced by HPO₄²⁻ even in aqueous 0.1 M K₂HPO₄, and that cations such as K⁺ and Na⁺ were not involved in the ion transport process. (mun.ca)
The DPE/B alternating copolymer was selectively hydrogenated to saturate the polymer backbone (DPE/E), then functionalized via an acid-catalyzed Friedel-Crafts reaction to attach alkyl side chains containing bromofunctional groups for subsequent quaternization. (rpi.edu)
Under a 4 V direct current (DC) applied voltage, electromechanical transducers derived from these triblock copolymer membranes with added ionic liquid showed superior actuation performance compared to a benchmark Nafion® membrane, suggesting potential for ionic polymer device applications. (elsevierpure.com)

It could be used as either a solid battery electrolyte or as an ion-conducting binder for the cathode of an all-solid-state battery. (theorkneynews.scot)

Schematic illustrations of solid-state Li-S batteries using (A) traditional solid polymer electrolyte (SPE) and (B) the PO-PU-LiTFSI electrolyte, (C) fabrication of the PO-PU-LiTFSI electrolyte and sulfur cathode. (oaepublish.com)

This was attributed to optimum modulus, improved ionic conductivity, and microphase-separated morphology of triblock copolymers. (elsevierpure.com)

We report a method to significantly enhance the conductivity of lithium ions in a polymeric lithium salt membrane by introducing functionalized meso/macro-pores to accommodate a mixture of organic solvents in the polymer matrix. (rsc.org)

Described in a paper in Nature, the material is made from combining cellulose nanofibrils (or polymers ), extracted from wood, with copper ions. (cosmosmagazine.com)
By incorporating copper with one-dimensional cellulose nanofibrils, we demonstrated that the normally ion-insulating cellulose offers a speedier lithium-ion transport within the polymer chains," explains Professor Liangbing Hu, from the department of materials science and engineering at the University of Maryland, US, and co-author on the paper. (cosmosmagazine.com)
In research published in the journal Nature , the team demonstrates a solid ion conductor that combines copper with cellulose nanofibrils - polymer tubes derived from wood. (theorkneynews.scot)

Interfacial environment in HSEs ideally modified for Li-ion transport is identified by 7 Li NMR measurements. (researchsquare.com)

The researchers found that the material, when formulated into a 3D structure, could act as a superhighway for fast lithium-ion transport with superior mechanical toughness, resulting in longer charging batteries that can go farther. (materialstoday.com)

The researchers also used computer modelling to determine how the material transported lithium ions, explaining why it was so much more conductive than its counterparts. (cosmosmagazine.com)
Li-ion conductive filler such as garnet Li 7 La 3 Zr 2 O 12 (LLZO) is proposed for the high performance of HSEs, unfortunately, which suffers from native surface layer resistance to Li-ion transport. (researchsquare.com)

However, most applied charge carriers in non-aqueous media migrate quite slowly, with poor ion conductivity, compared with charge carriers in aqueous media. (rsc.org)

Room-temperature ionic conductivity of around 1.97 × 10 −4 S cm −1 is achieved from the sample with 0.5 wt % of TiO 2 addition (CPE-8), which is significantly higher than that of the sample (PE-8) without TiO 2 (1.51 × 10 −4 S cm −1 ). (ncku.edu.tw)
Room-temperature ionic conductivity of around 1.97 × 10−4 S cm−1 is achieved from the sample with 0.5 wt % of TiO2 addition (CPE-8), which is significantly higher than that of the sample (PE-8) without TiO2 (1.51 × 10−4 S cm−1). (ncku.edu.tw)
The ionic conductivity of the GPEs exhibit Arrhenius-type behavior, and the total ionic conductivity at room temperature is suitable for applications, with values of 0.85 × 10 -4 S/cm for 0.5 M and 3.56 × 10 -4 S/cm for 1.0 M concentrations. (syr.edu)

Biological ion channels are protein-based pores capable of regulating ion transport in living cells in response to external stimuli, leading to the ultra-selective transmembrane move of specific ions (e.g. (nature.com)
While these designs captured one of biological ion channel feature, to replicate all the three in high precision remain grandly challenging. (nature.com)
Hasti Amiri, Kenneth L. Shepard, Colin Nuckolls, and Raúl Hernández Sánchez Single-Walled Carbon Nanotubes: Mimics of Biological Ion Channels . (columbia.edu)
These observations were modeled in the low-to-medium concentration range (0.1−2.0 M) by an electrostatic mechanism that mimics the behavior observed in many biological ion channel-forming proteins. (columbia.edu)

In particular, the salt-doped tapered block copolymers can exhibit similar or even improved ionic conductivity compared to salt-doped non-tapered analogous block copolymers with greatly reduced (and controllable) processing temperatures. (justia.com)

To understand the ionic flow through natural ion channels and artificial nanopores is of fundamental interest in biology, physics, medicine, and chemistry. (gsi.de)
The introduction of tapered interfaces to such block copolymers can decrease the segregation strength between pure blocks of dissimilar monomers, thus enabling the manipulation of polymer phase behaviors without changing block chemistry. (justia.com)
We will demonstrate that there is an optimum ionic conductivity due to the competing effects of increasing ion concentration and decreasing ion mobility, with further stiffening enabled by changing the crosslink chemistry without detrimental effects to the ionic conductivity. (utexas.edu)
In this project the core skills of MIP Technologies and Physical Chemistry in polymer design and studies of the colloidal domain have signifi cant overlap and complementarity. (lu.se)

A new perfluorinated sulfocationic polymer and a membrane based thereon have been produced using the thermally initiated high-pressure polymerization. (hse.ru)

The materials we make are niche polymers with tailor-made sites that facilitate selective molecular interactions. (lu.se)

The German researchers published a paper entitled " On a high-capacity aluminium battery with a two-electron phenothiazine redox polymer as a positive electrode " in the journal Energy & Environmental Science this month. (cleantechnica.com)
However, to date, it remains a challenge to identify appropriate host electrode materials that reversibly insert (complex) aluminium ions. (cleantechnica.com)
This strategy involves using an organic redox polymer as a positive electrode material, which reversibly inserts two [AlCl4]− ions with a specific capacity that surpasses that of graphite as a positive electrode material. (cleantechnica.com)
While classical lithium-ion batteries might benefit from engineered electrode materials, next generation batteries should rely on abundant elements, be safe and of low cost, use non-toxic materials and be easy to recycle. (cleantechnica.com)
Birgit Esser, one of the lead researchers, said, "With its high discharge voltage and specific capacity, as well as its excellent capacity retention at fast C rates, the electrode material represents a major advance in the development of rechargeable aluminium-ion batteries. (cleantechnica.com)

The molar conductivity of the supporting ion varies according to the type of an organic solvent. (rsc.org)
reported that the low viscosity of the organic solvent increases the molar conductivity of the supporting ion. (rsc.org)
Herein, a series of thermally cured PEs featuring cross-linked ionic networks are fabricated via solvent-less, in-situ polymerization and introduced for rechargeable lithium batteries. (ncku.edu.tw)
The gel electrolyte was synthesized by combining a PVDF polymer host, Ca(TFSI) 2 salt, and N-methyl-2-pyrrolidone (NMP) solvent. (syr.edu)

The research team has designed a supramolecular lithium ion conductor (SLIC) in which the ionic conductivity is provided by a polyether backbone. (dnsalias.com)
Second, its coplanar backbone can facilitate the delocalization of π-electrons, enhance intermolecular π-π interactions and charge transport. (oaepublish.com)
Additionally, the DPE/B polymer was cyclized via an acid-catalyzed Friedel-Crafts reaction to increase the glass transition of the precursor polymer backbone. (rpi.edu)
The cyclized DPE/B (DPE/B-C) had a glass transition temperature of 205°C, up from 103°C for DPE/E. Benefits of the increased glass transition temperature of the polymer backbone are explored. (rpi.edu)

Bottom: the molecular structure of the material, with cellulose polymers in green, and copper ions in blue. (cosmosmagazine.com)

The reactivation process is believed to involve further oxidation of the overoxidized polymer with the elimination of protons. (mun.ca)

The overoxidized polymer was reactivated in Et₄NClO₄/acetonitrile when the potential exceeded 0.9 V. The other method is to oxidize the overoxidized polymer with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). (mun.ca)

Anatomy37

Organisms11

Diseases1

Chemicals and Drugs122

Analytical, Diagnostic and Therapeutic Techniques and Equipment21

Phenomena and Processes56

Disciplines and Occupations4

Technology, Industry, Agriculture14

Information Science4

Health Care1

Electrolytes44

Liquids8

Enhanced ionic conductivity1

Conduction6

Conductivity and mechanical2

Conductivities5

Results in high ionic conductivity2

Electrolyte membrane fuel cells1

Composite7

Electrochemical stability3

Molecules5

Inorganic7

Conductors2

Nanoparticles3

Hydroxide ions1

Divalent ions2

Solid electrolyte2

Exchange membranes13

20211

20191

Electrodes2

Anionic2

20181

Poly5

PILs2

Selectivity5

Anode2

Properties8

Polymeric systems1

Stability3

Hydrophobic1

Liquid electrolyte2

Cation1

Water uptake1

Copolymer4

Battery electrolyte1

Cathode1

Modulus1

Organic solvents1

Cellulose nanofibrils3

Interfacial1

Lithium-ion transport1

Conductive2

Aqueous1

Room-temperature3

Biological4

Exhibit1

Chemistry4

Membrane based1

Selective1

Electrode5

Solvent4

Backbone4

Molecular1

Protons1

Acetonitrile1