Effects of zwitterionic molecules on ionic association in ethylene oxide-based electrolytes

Nguyen, Manh Tien; Shao, Qing

doi:10.1016/j.fluid.2020.112572

Cited by 11 publications

(24 citation statements)

References 56 publications

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“…Zwitterionic molecules can associate with both cations and anions of DES electrolyte at the same time which can effectively dissociate DES ions. [ 27,41 ] This ability may accelerate the diffusion of cations and anions in gel electrolytes. Therefore, the ionic conductivity of P(AA‐ co ‐VIPS) DES gels remain high in the shown polymer concentration range.…”

Section: Resultsmentioning

confidence: 99%

“…This ability has been demonstrated to promote ion pair dissociation and enhance the ionic conductivity of various polyelectrolytes, ionic liquids, hydrogel and ionogel electrolytes through ion‐dipole interactions. [ 27‐30 ] Additionally, polymerized zwitterionic molecule can generate dipole‐dipole physical cross‐links between ZW groups which can increase the stiffness of a gel polymer electrolyte. For instance, Panzer group reported zwitterionic copolymer ionogels which exhibit ionic conductivity up to 6.7 mS cm −1 and compressive elastic moduli up to 11 MPa.…”

Section: Introductionmentioning

confidence: 99%

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Design of highly stretchable deep eutectic solvent‐based ionic gel electrolyte with high ionic conductivity by the addition of zwitterion ion dissociators for flexible supercapacitor

Wang

et al. 2020

Polymer Engineering & Sci

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Nonvolatile deep eutectic solvent (DES) electrolytes with good electrochemical stability have recently emerged as promising electrolytes for energy storage devices. In this report, for the first time a polymerized zwitterionic molecule was introduced and a series of hybrid cross‐linked zwitterion‐containing copolymer DES gels are synthesized via UV initiated free‐radical copolymerization of acrylic acid (AA), sulfobetaine vinylimidazole (VIPS) and poly(ethylene glycol) diacrylate (PEGDA) monomers, in situ within DES, which is prepared from 1:2 M ratio of choline chloride and ethylene glycol. Systematically varying the AA:VIPS molar ratio and copolymer contents within the copolymer network enables one to widely tune the mechanical properties and ionic conductivity of the poly(AA‐co‐VIPS) DES gels. The tensile strength of P(AA‐co‐VIPS) DES gels significantly increased from 28 kPa to 176 kPa with fracture strain from 720% to 1370%, while the ionic conductivity of copolymer DES gels remains high from 2.7 to 4.1 mS cm−1 with the increase of copolymer content from 25 wt % to 45 wt%. A copolymer DES gel not only enables a supercapacitor deliver high capacitance of 71.52 F g−1 at 0.5 A g−1, and retains ∼97% of its capacitance after 2000 cycles, but also achieves outstanding capacitive performance over wide temperature range.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of highly stretchable deep eutectic solvent‐based ionic gel electrolyte with high ionic conductivity by the addition of zwitterion ion dissociators for flexible supercapacitor

Wang

et al. 2020

Polymer Engineering & Sci

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“…The molecular dynamics simulations indicated that zwitterions weaken the association between anions and cations ( Fig. 9 E–H) [ 214 ]. The anionic and cationic groups of zwitterions act as sites that interact with cations and anions, respectively, benefiting the dissociation of oppositely charged ions [ 215 ].…”

Section: Zwitterionic Conducting Polymers For Bioelectronic Devicesmentioning

confidence: 99%

“…(LiTFSI = lithium bis (trifluoromethanesulfonyl); EO = oligo(ethylene oxide); ZW = zwitterionic molecules). Reproduced with permission [ 214 ]. Copyright 2020, Elsevier Ltd. (I) Density functional theory (DFT) calculation of the interaction between different components in zwitterionic polymer hydrogel (polySH) electrolyte.…”

Section: Zwitterionic Conducting Polymers For Bioelectronic Devicesmentioning

confidence: 99%

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Chemically revised conducting polymers with inflammation resistance for intimate bioelectronic electrocoupling

Qian

Lin

Pan

et al. 2023

Bioactive Materials

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Electrolyte Regulation of Bio‐Inspired Zincophilic Additive toward High‐Performance Dendrite‐Free Aqueous Zinc‐Ion Batteries

Gou

Luo

Zhang

et al. 2023

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Aqueous zinc‐ion batteries hold attractive potential for large‐scale energy storage devices owing to their prominent electrochemical performance and high security. Nevertheless, the applications of aqueous electrolytes have generated various challenges, including uncontrolled dendrite growth and parasitic reactions, thereby deteriorating the Zn anode's stability. Herein, inspired by the superior affinity between Zn2+ and amino acid chains in the zinc finger protein, a cost‐effective and green glycine additive is incorporated into aqueous electrolytes to stabilize the Zn anode. As confirmed by experimental characterizations and theoretical calculations, the glycine additives can not only reorganize the solvation sheaths of hydrated Zn2+ via partial substitution of coordinated H2O but also preferentially adsorb onto the Zn anode, thereby significantly restraining dendrite growth and interfacial side reactions. Accordingly, the Zn anode could realize a long lifespan of over 2000 h and enhanced reversibility (98.8%) in the glycine‐containing electrolyte. Furthermore, the assembled Zn||α‐MnO2 full cells with glycine‐modified electrolyte also delivers substantial capacity retention (82.3% after 1000 cycles at 2 A g‐1), showing promising application prospects. This innovative bio‐inspired design concept would inject new vitality into the development of aqueous electrolytes.

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Effects of zwitterionic molecules on ionic association in ethylene oxide-based electrolytes

Cited by 11 publications

References 56 publications

Design of highly stretchable deep eutectic solvent‐based ionic gel electrolyte with high ionic conductivity by the addition of zwitterion ion dissociators for flexible supercapacitor

Design of highly stretchable deep eutectic solvent‐based ionic gel electrolyte with high ionic conductivity by the addition of zwitterion ion dissociators for flexible supercapacitor

Chemically revised conducting polymers with inflammation resistance for intimate bioelectronic electrocoupling

Electrolyte Regulation of Bio‐Inspired Zincophilic Additive toward High‐Performance Dendrite‐Free Aqueous Zinc‐Ion Batteries

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