A kind of preparation method and application of gel electrolyte

Abstract

The invention relates to a preparation method and application of a gel electrolyte. The method comprises the following steps: adding the lithium material into the preset solution, placing the lithium material at 0-70° C. for 1 minute to 10 days, and then taking out the lithium material to obtain a lithium material with an initiating amine compound protective layer on the surface; The lithium material with the protective layer of the initiating amine compound on the surface obtained in the first step is immersed in the ether-based electrolyte for 0.1 to 10 days to obtain an in-situ gel electrolyte, which is used as the gel electrolyte in the battery. The method of the invention is simple, low in cost and practical and effective.

Description

technical field [0001] The present invention relates to a preparation method of a gel electrolyte and its application, more specifically, to a preparation method of an in-situ gel electrolyte and its application in a battery, and belongs to the related field of a secondary battery. Background technique [0002] In recent years, new secondary batteries such as lithium-ion and sodium-ion batteries have become more and more common in people's production and life, while batteries with gel polymer electrolyte systems meet people's needs for high energy density, safety and flexible devices. need. However, most of the preparation methods of gel electrolytes are relatively complicated at present, and the preparation of some gels needs to be formed under certain conditions. CN 106532115 A discloses a preparation method of gel electrolyte for lithium-sulfur batteries. Electrolyte, polymerizable monomolecular organic matter and initiator need to initiate polymerization under high temp...

AI Technical Summary

Problems solved by technology

However, most of the preparation methods of gel electrolytes are relatively complicated at present, and the preparation of some gels needs to be formed under certain conditions.

CN 106532115 A discloses a preparation method of gel electrolyte for lithium-sulfur batteries. Electrolyte, polymerizable monomolecular organic matter and initiator need to initiate polymerization under high temperature or ultraviolet light conditions to prepare gel electrolyte. The process is complex and energy consumption and Cost increase; CN 106654368 A discloses a preparation method of gel electrolyte, the blended porous membrane prepared by PS-PEO-PS three-stage copolymer prepares a crosslinked porous membrane under the action of a catalyst and a crosslinking agent, and the porous membrane absorbs After the electrolyte is prepared into a gel electrolyte

This method is complicated and the process is cumbersome; Yonggang Wang et al. (Angew.Chem.Int.Ed.2017, 56) first configured three solutions of A, B, and C, mixed them in a certain proportion, and prepared a condensate under ultraviolet light irradiation conditions. Gel electrolyte, this method is more complicated, and the gel forming conditions are more stringent

Xin-Bo Zhang et al. (Adv. Mater. 2017, 29, 1700378) The process of preparing gel electrolyte requires high temperature curing, the conditions for gelation are relatively harsh, and energy consumption will also increase

Images