A kind of alkaline battery negative electrode preparation method

Abstract

The invention discloses an alkaline battery cathode preparation method, and aims to improve the uniform dispersity of a gelatinizing agent for preparing gel electrolyte. The alkaline battery cathode preparation method comprises the following steps: (1) metering and feeding an electrolyte into a stirring tank of a gel electrolyte stirring device, and starting a stirring motor of the gel electrolyte stirring device to enable the gel electrolyte stirring device to firstly stir the electrolyte for time A; (2) after the electrolyte is stirred for the time A, metering the gelatinizing agent, then dispersively feeding the gelatinizing agent into the stirring tank of the gel electrolyte stirring device, completing the feeding of the gelatinizing agent within time B, and keeping the stirring motor of the gel electrolyte stirring device working during the feeding of the gelatinizing agent; (3) continuously enabling the stirring motor of the gel electrolyte stirring device to work for time C; (4) aging a product obtained in the step (3) for time D to swell the gelatinizing agent; (5) metering the gel electrolyte obtained in the step (4), then feeding the gel electrolyte into a stirring container of zinc paste stirring equipment, adding metered zinc powder, and uniformly mixing the zinc powder and the gel electrolyte through the zinc paste stirring equipment; (6) feeding zinc paste obtained in the step (5) into a zinc paste transfer container.

Description

technical field [0001] The invention relates to the technical field of alkaline batteries, in particular to a novel battery negative electrode preparation method. Background technique [0002] Alkaline batteries are primary batteries commonly used in the market. With the development of alkaline battery technology, people put forward higher requirements for the high performance, consistency and leakage resistance of batteries, especially the high capacity of batteries after long-term storage. And leakage resistance, so the performance of the battery after long-term storage, that is, the storage performance of the battery also needs to be improved and improved accordingly. Generally speaking, alkaline batteries should not leak during the specified shelf life, and maintain sufficient power, so that they can be used normally on electrical appliances. Accordingly, leakage and capacity reduction have become the two main problems that affect battery storage performance and make th...

AI Technical Summary

Problems solved by technology

The uneven dispersion of zinc powder in the gelling agent will lead to poor stability of the zinc paste inside the battery. The zinc powder in the zinc paste and the gel electrolyte are easily delaminated. More, the larger the amount of gas evolution, especially after the battery is partially discharged, the viscosity of the upper part of the layered zinc paste is too low, on the one hand, the zinc powder loses its protection, on the other hand, the consumption of water in the reaction and the moisture in the zinc paste are absorbed by the positive electrode, It is easy to form "sand grains" in the zinc paste, and the amount of gas evolution will increase. Under certain conditions, it may also cause the formation of zinc oxide dendrites, causing the battery to short circuit, resulting in battery loss and battery leakage.

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