Method for preparing gel copolymer electrolyte through in-situ ring-opening copolymerization
The invention discloses a method for preparing a gel copolymer electrolyte through in-situ ring-opening copolymerization. The preparation method comprises the following steps: in a high-purity argon atmosphere, mixing a five-membered cyclic ether solvent 1, 3-dioxolane DOL and tetrahydrofuran THF ac...
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Main Authors | , , , |
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Format | Patent |
Language | Chinese English |
Published |
27.11.2020
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a method for preparing a gel copolymer electrolyte through in-situ ring-opening copolymerization. The preparation method comprises the following steps: in a high-purity argon atmosphere, mixing a five-membered cyclic ether solvent 1, 3-dioxolane DOL and tetrahydrofuran THF according to a certain volume ratio; then sequentially dissolving a lithium salt additive, an electrolyte lithium salt and an ionic liquid into the mixed solvent to obtain a copolymer precursor solution; introducing the copolymer precursor solution into a commercial diaphragm in a liquid injection form, and assembling into a button cell; placing the assembled button cell at room temperature for a long time; after the DOL and THF are fully reacted, carrying out ring-opening copolymerization curingto form a gel copolymer electrolyte, and carrying out in-situ preparation to obtain the copolymer-based gel cell. The technical method is simple and convenient, in-situ ring-opening copolymerization reaction of cyclic ether i |
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Bibliography: | Application Number: CN202010902902 |