A three-electrode lithium-air battery test mold

Abstract

A three-electrode lithium-air battery test mold is a new lithium-air battery mold. The invention is a test mold adopting a three-electrode test mode, adding a reference electrode can detect and analyze the electrode process in the charging and discharging process of the battery in real time. The reference electrode part is composed of an elastic insulating sheet and a replaceable reference probe, which not only meets different test requirements but also solves the sealing problem of the shell after adding the reference. Secondly, the present invention adopts a threaded regulating rod, which can conveniently regulate and control the internal pressure of the assembled battery to control the internal environment of the battery test; finally, the positive electrode of the present invention has holes and constrictions to facilitate pressure adjustment and gas contact, and avoid deformation of the pole piece during extrusion. , to ensure the normal progress of the battery test.

Description

technical field [0001] The invention is a novel lithium-air battery mould, in particular to a test mold for measuring the performance of the lithium-air battery by a three-electrode method. Background technique [0002] Lithium-air batteries have attracted widespread attention due to their high specific energy density, and the main method for characterizing the performance of lithium-air batteries is to use battery molds to measure their electrochemical performance. Using the battery mold to measure its charge-discharge performance and using the electrochemical workstation to conduct cyclic voltammetry tests on lithium-air batteries can clearly understand the electrochemical reactions that occur inside the battery during the charge-discharge process, which is of great significance for the analysis of the battery charge-discharge mechanism . [0003] Compared with the traditional lithium-ion battery test mold, many problems need to be solved in the lithium-air measurement pr...

AI Technical Summary

Problems solved by technology

However, the adjustment of the internal pressure of the battery by the mold has not been further improved.

The invention patent of Li Jian et al. (CN 201510013797.3) designed a battery mold with a special air path to solve the problem of uneven ventilation, but the mold uses a spring pressure head to ensure close contact, which limits the controllability of the pressure

The patent of Wang Haihui et al. (CN 201310136753.0) adopts the design of separately adjusting the positive and negative electrode shells to improve the contact pressure of battery materials, but the quantitative control of the adjustment is not explained.

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