Three-electrode lithium air cell test die

Abstract

A three-electrode lithium air cell test die is a novel lithium air cell die. The three-electrode lithium air cell test die is a test die adopting a three-electrode test method, and a reference electrode is added, so that the electrode process in the cell charging and discharging course can be detected and analyzed in real time. A reference electrode component is formed by combining an elastic insulating sheet and a replaceable reference probe, and not only meets different test requirements, but also solves the sealing problem of a casing after the adding of the reference electrode. A regulating rod with a thread is adopted to conveniently regulate pressure inside an assembly cell so as to control an internal cell test environment; finally a positive electrode is provided with a hole and a throat to facilitate pressure regulation and gas contact and avoid pole piece deformation in the squeezing process, and it is guaranteed that the cell test is performed normally.

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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