Hot press sintering method of cuprous chloride cathode material for seawater battery

Abstract

The invention discloses a hot-pressing sintering method for a cuprous chloride positive electrode material for a seawater battery, comprising the following steps: Step S110, batching, weighing cuprous chloride powder and active material powder according to the ratio of 90-99:1-10 , to obtain the premix; step S120, mixing, placing the premix in a three-dimensional mixer and mixing uniformly, filling the mixing cylinder with nitrogen gas during the mixing process, and mixing uniformly to form a mixture; step S130, pre-mixing Pre-place the current collector in the graphite mold for sintering, then put the mixture into the mold, and install the graphite indenter on the mold to ensure that the graphite indenter can only move vertically, and put the indenter at room temperature Pre-compacting; step S140, sintering; step S150, demoulding. The beneficial effect is that the seawater-activated battery positive electrode material is prepared by adopting the cuprous chloride powder hot-pressing sintering process, and compared with the cuprous chloride preparation method in the prior art, the preparation process is simple, the process flow is short, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a hot-press sintering method for a cuprous chloride positive electrode material for seawater batteries. Background technique [0002] New energy and energy security have become an important development direction in my country. my country has developed rapidly in the field of marine equipment and water life-saving. The application of seawater-activated batteries that provide power supply for these marine equipment has also received close attention and attention. [0003] Seawater-activated batteries generally use metal aluminum, magnesium, zinc, lithium and other highly active elements as the negative electrode, use halide salts and other catalytic substances as the positive electrode, and use seawater directly as the electrolyte to form a new type of high-energy chemical power source. The technical principle of the battery reaction is to use the redox reaction between the m...

AI Technical Summary

Problems solved by technology

[0006] (1) The preparation method of cuprous chloride is to melt the substance into a liquid state above 430°C, and then pour it into a mold, and through subsequent pressing, molding, diffusion welding and other methods, realize the integration with the current collector material connection, the preparation process is complicated and the process is long, and the requirements for production equipment are very strict; (2) cuprous chloride is highly corrosive, and it is impossible to use metal molds such as stainless steel, and it is necessary to use precious metal molds with excellent corrosion resistance, resulting in high production costs. Expensive and inconvenient to prepare

(3) In the process of cooling cuprous chloride from liquid to solid state, it is easy to absorb air and cause a large number of pores. When these pores are made into electrode materials, the electrochemical activity of the electrode is seriously reduced and the electrical performance of the battery is affected.

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