UV-cured gel polymer electrolytes with improved stability for advanced aqueous Li-ion batteries

We report the development of a new class of "water-in-salt" electrolytes based on UV photopolymerized acrylic polymers. Incorporation of "water-in-bisalt" in a polymer matrix reduces water activity, expands the electrochemical stability window to 4.1 V, and dramatically improves...

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Bibliographic Details
Published inChemical communications (Cambridge, England) Vol. 55; no. 87; pp. 1385 - 1388
Main Authors Langevin, Spencer A, Tan, Bing, Freeman, Adam W, Gagnon, Jarod C, Hoffman, Christopher M, Logan, Matthew W, Maranchi, Jeffrey P, Gerasopoulos, Konstantinos
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 29.10.2019
Subjects
Electrolytes
Electrolytic cells
Flammability
Lithium-ion batteries
Rechargeable batteries
Stability
Water
Water activity
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Summary:We report the development of a new class of "water-in-salt" electrolytes based on UV photopolymerized acrylic polymers. Incorporation of "water-in-bisalt" in a polymer matrix reduces water activity, expands the electrochemical stability window to 4.1 V, and dramatically improves cycle life in full cells with lithium titanate anodes compared to liquid water-based electrolytes. We report UV-photopolymerized "water-in-bisalt" electrolytes that expand the electrochemical stability window, improving "water-in-bisalt" cycle life in lithium titanate full cells.
Bibliography:Electronic supplementary information (ESI) available: Methods, supporting figures, GPE flammability and flexible battery videos. See DOI
10.1039/c9cc06207f
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc06207f