Gel electrolyte, preparation method thereof, battery using gel electrolyte and preparation method thereof

Abstract

The invention discloses a gel electrolyte, a preparation method thereof, a battery using the gel electrolyte and a preparation method thereof. The gel electrolyte comprises a nonaqueous solvent and a gelator, wherein the nonaqueous solvent comprises lithium salts, and the gelator comprises polyethyleneglycol compounds with unsaturated double bonds, ester monomers with unsaturated double bonds, silane coupling agents and thermal initiators. The gel electrolyte is in double-ingredient package, wherein the weight ratio of the ingredient A and the ingredient B of the gel electrolyte is 1 / 1. The stirred uniform liquid is injected into a dried battery to be placed for 16 to 24 hours, so the gel electrolyte is sufficiently distributed inside the battery, and a gel electrolyte battery is obtained through in-situ thermal polymerization. Compared with the prior art, the invention uses a simple gel electrolyte preparation method, improves the safety performance for using the gel electrolyte battery on the premise of not changing the preparation technology and not controlling the preparation cost of the battery using the gel electrolyte, and ensures that a lithium battery has good electrochemical performance.

Description

technical field [0001] The application relates to a gel electrolyte and a preparation method thereof, a battery using the gel electrolyte and a preparation method thereof. Background technique [0002] Lithium-ion batteries are gradually replacing lead-acid batteries, Ni-Cd and MH-Ni batteries due to their higher volume specific energy, weight specific energy and good environmental protection, and are widely used in portable electronic devices such as mobile phones and notebook computers , has a good application prospect. According to the different electrolytes used in lithium-ion batteries, they can be divided into liquid lithium-ion batteries and polymer lithium-ion batteries. Liquid lithium ion battery has good high charge and discharge rate and low temperature performance, but its disadvantages are: the liquid electrolyte may leak, which will endanger the safety of the battery; the arbitrariness of its shape. Polymer lithium-ion batteries use polymer electrolyte membr...

AI Technical Summary

Problems solved by technology

Liquid lithium ion battery has good high charge and discharge rate and low temperature performance, but its disadvantages are: the liquid electrolyte may leak, which will endanger the safety of the battery; arbitrary shape

However, this method is complex and will cause environmental pollution

[0003] The application number is: 03158361.X, the patent name is: "Lithium-ion battery gel electrolyte formula and the method for preparing gel electrolyte with the formula", the application number is: 200610122573.7, the patent name is: "a polymer The Chinese patents of "preparation method of gel electrolyte" have proposed a gel electrolyte and its preparation method. Although the gel electrolyte that can be obtained by these methods has high ion conductivity, the electrical performance is still Not very superior, the initial voltage and discharge capacity are not high

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