Filtering device for magnesium air battery reaction product

Abstract

The invention relates to a filtering device for a magnesium air battery reaction product, and the filtering device comprises a tank body, and further comprises a first filter net and a second filter net arranged in the tank body. The tank body is divided by the first filter net and the second filter net into three parts: a front part of the tank body, a middle part of the tank body and a rear partof the tank body. The middle part of the tank body is filled with a sand particle layer, and the first filter net and the second filter net both have a net number of 100-300. The sand particle size of the sand particle layer is 30-100 meshes, the first filter net and the second filter net are arranged in parallel with an interval, and the spacing between the first filter net and the second filternet is 0.5-3cm; the filtering device can simply and reliably filter out Mg(OH)2 generated by reaction, thereby effectively solving the problem of battery efficiency degradation caused by precipitation in a battery, and at the same time achieving the purpose of recycling an electrolyte and reducing emission and cost.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a filter device for reaction products of magnesium-air batteries. Background technique [0002] Magnesium-air battery is an electrochemical reaction device that uses metal magnesium as the anode fuel, oxygen in the air as the oxidant, and neutral salt water as the electrolyte. The specific electrochemical reaction formula is as follows: [0003] Negative electrode: Mg→Mg 2+ +2e - [0004] Positive pole: O 2 +2H 2 O+2e - →4OH - [0005] Total reaction: Mg+O 2 +2H 2 O→Mg(OH) 2 ↓ [0006] During the electrochemical reaction, the magnesium anode is gradually oxidized to Mg(OH) 2 , due to Mg(OH) 2 It is almost insoluble in water and exists in the form of floc in the electrolyte. To a certain extent, if Mg(OH) is not discharged in time 2 Or replace the electrolyte, it will cause the electrochemical reaction to weaken or even stop. [0007] According to different usage...

AI Technical Summary

Problems solved by technology

[0014] The present invention aims at the problems of the prior art, and provides a filter device for the reaction product of magnesium-air battery, which can simply and reliably filter out the Mg(OH) generated by the reaction 2 , so as to effectively solve the problem of battery efficiency drop caused by precipitation in the battery, and at the same time achieve the purpose of recycling the electrolyte and reducing emissions and costs

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