A kind of preparation method of lithium ion battery inorganic solid electrolyte thin film

Abstract

The invention relates to a method for preparing an inorganic solid electrolyte thin film of a lithium ion battery, which is technically characterized in that: methanol, ethanol, benzene, methylbenzene and an organic solvent are taken as media; dissolved reactants are in an ion state at a certain temperature and under self-generated pressure of a solvent in a sealed reaction system; charged ions formed by dissolving directionally move under the action of an electric field and form a relatively high supersaturation degree nearby an electrode; and then the charged ions nucleate to grow into electrolyte crystals, namely the inorganic solid electrolyte thin film of the lithium ion battery is formed on a substrate. The inorganic solid electrolyte thin film of the lithium ion battery prepared by a solvent thermal electrochemical method is uniform and compact, and has the characteristics of high conductivity and low conductive activation energy of a lithium ion. The preparation process with low energy consumption and environmental protection provides a new study idea for preparing the inorganic solid electrolyte thin film of the lithium ion battery and other thin film electrode materials and has a relatively high utility value.

Description

technical field [0001] The invention relates to a preparation method of an inorganic solid electrolyte film for a lithium ion battery. Background technique [0002] Lithium-ion secondary batteries with liquid electrolytes have achieved great commercial success, but they have disadvantages such as easy leakage, complicated assembly, and poor safety. Therefore, solid-state electrolytes for lithium-ion batteries emerged as the times require. Among them, the all-solid-state battery assembled by inorganic solid electrolyte has the advantages of wide operating temperature, small self-discharge, long service life, convenient assembly, no need for diaphragm materials, miniaturization, low product price, and good high-temperature stability. Inorganic solid electrolytes for lithium-ion batteries can better solve the safety problems of electrochemical instability, thermal decomposition, flammability, electrolyte leakage and other environmental problems of organic electrolytes used in e...

AI Technical Summary

Problems solved by technology

The methods currently used to prepare inorganic solid electrolyte films are mainly methods such as physical vapor deposition, chemical vapor deposition, and sol-gel. These methods generally have the following problems: (1) high energy consumption; (2) high production costs; (3) The prepared film needs subsequent heat treatment

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