An In Situ Synchronous Observation System of Lithium-ion Battery Electrode Reaction

Abstract

The invention relates to an in-situ synchronous observation system for the electrode reaction of a lithium-ion battery, which first includes the assembly of an in-situ observation device: a resin shell is fixed on a stainless steel lower cover, a lithium sheet is used as a negative electrode, and an aluminum foil current collector is coated with an active material to make a positive electrode. There is an electrolyte between the negative electrode, the diaphragm, and the positive electrode, and they are sequentially put into the 3 through holes of the resin case to fit the upper surface of the stainless steel lower cover. There are holes in the center of the diaphragm, lithium sheet and stainless steel lower cover. Among them, the conductive column is set in the groove of the resin shell and connected with the stainless steel lower cover, the lower surface of the stainless steel lower cover has quartz glass, and the stainless steel upper cover is sealed and connected with the resin shell; the in-situ observation device is fixed on the confocal microscope On the sample stage, the conductive column is connected to the electrochemical test equipment through wires, and the computer is equipped with supporting test software to control the confocal microscope, realizing real-time observation of the changes in the microscopic morphology and structure of the electrode material during the electrochemical cycle.

Description

technical field [0001] The invention relates to an in-situ synchronous observation system for the electrode reaction of a lithium-ion battery, in particular to a system that can perform real-time optical observation of the electrode material while the electrochemical test of the lithium-ion battery is being performed. The purpose of real-time observation and analysis of changes in microscopic morphology and structure during chemical testing. It belongs to the field of battery technology. Background technique [0002] In recent years, with the increasingly prominent energy crisis and environmental problems, energy conservation and environmental protection, and the development of new energy have become a worldwide consensus, and the use of clean energy requires excellent energy storage devices. Compared with other secondary batteries, lithium-ion batteries Because of its high energy density, low self-discharge rate, no memory effect, and high safety, it shines in the field of...

AI Technical Summary

Problems solved by technology

However, there is no corresponding technical support for applying it to the dynamic observation and analysis in the process of electrochemical testing of electrode materials.

Images