Hyperbranched polyether type solid polymer elecrolytes and preparation thereof

A technology of hyperbranched polyether and solid polymer, applied in the direction of circuits, electrical components, secondary batteries, etc., to achieve the effect of lowering the glass transition temperature, good mechanical properties, and good mechanical properties
CN101407625AInactive Publication Date: 2009-04-15BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2009-04-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a hyperbranched polyether type solid polymer electrolyte and a preparation method thereof. The polymer electrolyte material comprises a polymer substrate material (A), a polymer substrate material (B) and lithium salt (C), wherein, the polymer substrate material (A) is hyperbranched polyether which contains ether oxygen group and has completely amorphous structure; and the polymer substrate material (B) is polymer substrate material with excellent and mechanical property. The solid polymer substrate electrolyte membrane is prepared by one step method of volatile solvent, has simple preparation technique, higher ion electrical conductivity and electrical and chemical stability, has good mechanical performance and heat stability, and can be applied to the preparation of second lithium ion cells.
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Description

technical field

[0001] The invention relates to a solid polymer electrolyte applicable to lithium ion batteries and a preparation method thereof, in particular to a hyperbranched polyether type solid polymer electrolyte material and a preparation method thereof. Background technique

[0002] Polymer solid electrolyte, that is, a polymer complex formed by polymers and inorganic salts with ion conductivity, has the characteristics of good reliability, no leakage, and easy molding, and maintains the basic characteristics of polymers. The application in lithium-ion batteries has attracted widespread attention, and scholars at home and abroad have launched research work on new polymer electrolytes. At present, the polymer electrolyte systems that have been studied more mainly include PEO, PAN, PMMA, PVDF, PVC, etc. Among them, the electrolyte system polyoxyethylene (PEO) has always attracted attention because of its structural characteristics of easy ion conduction. However, the...

Claims

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