Plastic compositions, uses and methods of manufacture

By adding polymers to high-concentration electrolytes to create plastic compositions, the salting-out problem was solved, the voltage resistance and safety of electrochemical devices were improved, the manufacturing process was simplified, and the device lifespan was extended.

CN115136376BActive Publication Date: 2026-07-07ZEON CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZEON CORP
Filing Date
2021-02-25
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

High-concentration electrolytes are prone to salting out, which can lead to reduced electrolyte performance and device damage. In addition, their high viscosity makes them difficult to inject into the gaps in the device housing, affecting the manufacturing process.

Method used

Adding specific polymers to high-concentration electrolytes creates plastic compositions, which are then mixed with active materials and shaped into electrodes or insulating layers to inhibit salting out and increase viscosity.

Benefits of technology

It achieves improved voltage resistance, reduced flammability, and increased migration number of high-concentration electrolytes, and facilitates the manufacture of electrochemical devices, extending device life and enhancing safety.

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Patent Text Reader

Abstract

Provided is an electrolyte solution for an electrochemical device, which is an electrolyte solution for an electrochemical device containing a cation (C) that is a metal ion of valence of one to three, an anion (A), a solvent (SO) that is a compound having a molecular weight of 1000 or less, and a soluble polymer (P) having a mass average molecular weight of more than 10,000, the content ratio of the solvent (SO) being 0.5 to 4 moles per 1 mole of the cation (C), and the content ratio of the polymer (P) being 0.5% by mass or more. Also provided are a plastic composition, an electrode sheet, an insulating layer, an electrochemical device, and a method for manufacturing the same, each of which contains the electrolyte solution.
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