Preparation method and application of a modified polysiloxane-based solid electrolyte membrane

A solid electrolyte membrane and polysiloxane-based technology, which is applied in the direction of solid electrolyte, electrolyte storage battery manufacturing, non-aqueous electrolyte, etc., can solve the problems of narrow electrochemical window and low ion conductivity, and achieve good mobility and low glass The effect of changing the transition temperature and broadening the range of application fields
CN108808099BActive Publication Date: 2020-04-28ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2020-04-28

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Abstract

The invention discloses a preparation method and application of a modified polysiloxane-based solid electrolyte membrane (SPE). In the present invention, SPE is made of poly(methylhydrogensilane) (PMHS), cyanoimidazolium ionic liquid (IL-CN), allyl-terminated polyether (PEO), lithium salt and crosslinking agent. The preparation method of the present invention is as follows: 1, PMHS, PEO, IL-CN are fully mixed in anhydrous toluene, add chloroplatinic acid catalyst, react for an appropriate time at a certain temperature; 2, the product in step 1 is dissolved in anhydrous acetonitrile Mix an appropriate amount of lithium salt, cross-linking agent and catalyst into the mixture, pour the solution into a polytetrafluoroethylene mold after stirring well, heat and cross-link and solidify in a vacuum oven, and obtain an all-solid polymer electrolyte membrane. The obtained electrolyte has high electrical conductivity, wide electrochemical stability window and high stability, and can be used in lithium secondary batteries.
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Description

technical field

[0001] The invention relates to a preparation method and application of a modified polysiloxane-based solid electrolyte membrane. Background technique

[0002] With the advancement of science and technology, people have entered the digital information age, and portable smart digital products are developing rapidly. Correspondingly, energy storage has become a very important scientific and technological topic. The emergence and development of lithium-ion batteries not only solve the energy storage problem of mobile digital devices to a large extent, but also promote the industrial development of digital products. For example, smartphones, laptops, audio equipment, game consoles, digital cameras, PDAs, etc. On the other hand, oil resources are depleting day by day, automobile exhaust has increasingly significant impact on the ecological environment, and people's awareness of environmental protection is constantly increasing. This makes lithium-ion secondary ...

Claims

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