Cross-linked polymer-based all-solid-state electrolyte material and application of cross-linked polyoxyethylene ether

Abstract

The invention discloses a cross-linked polymer-based all-solid-state electrolyte material and an application of cross-linked polyoxyethylene ether. The cross-linked polymer-based all-solid-state electrolyte material comprises cross-linked polyoxyethylene ether, lithium salt and a modifying agent. An electrolyte membrane prepared from the electrolyte material containing the cross-linked polyoxyethylene ether has relatively high conductivity and a wide electrochemical window; and an assembled half-cell has good high-temperature cycle performance, and the retention rate of the charge-discharge specific capacity of the half-cell is high.

Description

technical field

[0001] The invention relates to the application of a cross-linked polymer-based all-solid-state electrolyte and cross-linked polyoxyethylene ether, which belongs to the field of lithium battery materials. Background technique

[0002] Compared with traditional electrolytes, polymer electrolytes have the advantages of good high temperature stability, wide electrochemical window, high safety performance, and easy matching with high-voltage electrodes. They are more suitable for the next generation of high-performance lithium-ion batteries with large scale and high energy density. It has broad application prospects in electric vehicles, energy storage power stations and other fields.

[0003] The polymer electrolyte is composed of a polymer and a lithium salt. The polymer is equivalent to a solid solvent, which plays the role of dissociating the lithium salt and conducting lithium ions, and the lithium salt plays the role of providing lithium ions. The study of...

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