Surface-functionalized polyphenylene sulfide, solid-liquid two-phase electrolyte and preparation method

A surface-functionalized, polyphenylene sulfide technology, used in non-aqueous electrolyte batteries, circuits, electrical components, etc., can solve the problems of poor room temperature ionic conductivity, poor machining performance, and low organic electrolyte conductivity, etc. No pollution, simple and convenient operation
CN112898569AActive Publication Date: 2021-06-04JIANGSU UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2021-06-04

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Abstract

The invention relates to the field of new energy materials, and discloses surface-functionalized polyphenylene sulfide, a solid-liquid two-phase electrolyte and a preparation method. The structure of the surface-functionalized polyphenylene sulfide is shown in the description, wherein a functionalized molecule R is an organic metal ion-free complexing agent of an oxygen-containing double-bond phenyl molecule with an anion binding effect; the metal cation M is Li+, Na+, Mg2+, Ca2+, Al3+ or K+; the anion X is Cl-, F-, BF4- or PF6-; and n is 30-150. The prepared polyphenylene sulfide-based solid-liquid two-phase electrolyte contains a small amount of liquid phase, and the volume ratio of the solid phase to the liquid phase is 5-15: 1. The metal cations pinned in the polyphenylene sulfide powder are separated from a solid phase, effective conduction is formed among the powder, the conductivity of the metal cations is greatly improved, functional molecules and anions X introduced to the surface of the material can be effectively bound, and the material becomes an excellent conductor of a single metal cation.
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Description

technical field

[0001] The invention relates to the field of new energy materials, in particular to a surface-functionalized polyphenylene sulfide, a solid-liquid dual-phase electrolyte and a preparation method. Background technique

[0002] Lithium-ion batteries (LIBs), are considered to be the most promising energy storage technology due to their relatively high energy density. Conventional lithium-ion batteries usually use organic liquid electrolytes, which have relatively high ionic conductivity, but have serious safety issues, short lifespan, high cost, and low power density. However, all-solid-state lithium batteries using non-flammable solid electrolytes can avoid some problems, especially safety issues. Relatively speaking, all-solid-state lithium batteries have better safety performance, longer cycle life, and higher energy density. However, the high interfacial impedance between the cathode and the solid-state electrolyte and the poor room temperature ionic condu...

Claims

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