A method of processing solid electrolyte and a method of testing element content in solid electrolyte

Abstract

The invention relates to the technical field of batteries, and discloses a method for processing solid electrolytes and a method for testing element content in solid electrolytes. The method comprises: (1) first contacting a solid electrolyte with an alkaline substance to obtain a first contact material, the temperature of the first contact being 500-1000°C; (2) combining the first contact material with a solvent Carrying out the second contact to obtain the first contact material solution; (3) performing the third contact with the first contact material solution and acid to obtain the solid electrolyte solution. The method provided by the invention can test the content of lithium, aluminum, titanium, phosphorus and other elements in the solid electrolyte, the method is simple, and the test result has good reproducibility and high accuracy.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for processing solid electrolytes and a method for testing element content in solid electrolytes. Background technique [0002] In recent years, the increasingly prominent energy crisis and environmental pollution have prompted the rapid development of new energy technologies. Lithium-ion batteries are widely used in portable power tools, electronic equipment, electric vehicles, and energy storage due to their outstanding advantages such as high voltage, high energy density, good cycle performance, small self-discharge, and no memory effect. However, with the promotion of lithium-ion batteries, their safety performance and cruising range have become the focus of widespread attention. How to improve the energy density of lithium-ion batteries while improving their safety performance and cycle performance has become a key issue that needs to be solved urgently. [0003]...

AI Technical Summary

Problems solved by technology

[0008] However, solid-state electrolytes are an emerging research field, and there are no relevant methods and literatures to test the components of LATP.

After LATP is sintered at high temperature, its structure is very stable. In addition, titanium and phosphorus element compounds are not easily soluble in common acids and alkalis. Therefore, it is very difficult to dissolve LATP. At present, there is no good dissolution method. Due to the lack of testing methods, LATP The amount of each element is generally only calculated by the amount of input, which is difficult to meet the actual situation

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