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A kind of low internal resistance alkaline zinc-manganese battery and preparation method thereof

A zinc-manganese battery with low internal resistance technology, applied in the field of electrochemistry, can solve problems such as excessive internal resistance, achieve the effects of reducing internal resistance, simple preparation method, and simple process

Active Publication Date: 2019-04-30
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides a low internal resistance alkaline zinc-manganese battery and its preparation method, which solves the problem of excessive internal resistance between the positive electrode and the steel case, improves the discharge performance of the battery, and prolongs the storage time of the battery , no need to add additives to the positive electrode, the cost is low, the process is simple, the effect is remarkable, and it is suitable for industrial production

Method used

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  • A kind of low internal resistance alkaline zinc-manganese battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Using a spray device, under the conditions of pressure 1MPa and spraying frequency 1s / time, spray the conductive emulsion with graphite as the conductive agent on the outer surface of the positive electrode ring of alkaline zinc-manganese dry battery, with a thickness of 8μm, and put it into the battery coated with conductive emulsion after drying In the steel shell, a diaphragm paper tube is inserted in the middle, and the electrolyte is injected into the diaphragm paper tube. After the electrolyte is completely absorbed by the diaphragm paper tube and the positive electrode ring, zinc paste is injected, and a copper nail with a negative electrode cover is inserted, and the product is obtained by pressing and sealing.

Embodiment 2

[0027] Using a spraying device under the condition of a pressure of 4MPa and a spraying frequency of 0.5s / time, the conductive emulsion with graphite as the conductive agent is sprayed on the outer surface and inner surface of the positive electrode ring of the alkaline zinc-manganese dry battery, with a thickness of 2 μm. The remaining preparation methods and examples 1 is exactly the same.

Embodiment 3

[0029] Use a spray device under the condition of a pressure of 8MPa and a spraying frequency of 0.1s / time, to spray the conductive emulsion with graphite and conductive carbon black on the outer surface and inner surface of the positive electrode ring of the alkaline zinc-manganese dry battery, with a thickness of 90 μm, and prepare the rest Method is identical with embodiment 1.

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Abstract

The invention relates to the field of electrochemistry and discloses an alkaline zinc-manganese battery with low internal resistance and a preparation method of the alkaline zinc-manganese battery. A conductive emulsion is sprayed on the surface of an anode ring of the alkaline zinc-manganese battery by using a spraying device, and the anode ring is put into a steel battery shell after being dried, so that the internal resistance of the battery is greatly reduced, and the discharge performance and the long-term storage property are improved, the cost is reduced, the process is simplified and industrialization is very easy to implement. Through improving conductive carbon in the conductive emulsion, polymer-grafted and modified conductive carbon is obtained, and the high-power discharge performance of the battery is also improved, and meanwhile, the alkaline zinc-manganese battery also has good dispersibility and stability and relatively large specific surface area, is relatively low in cost, simple in process and suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and relates to a low internal resistance alkaline zinc-manganese battery and a preparation method thereof. Background technique [0002] Alkaline zinc-manganese dry batteries (hereinafter referred to as alkaline-manganese batteries) have a series of models, mainly including LR03, LR6, LR14, LR20, LR8D425, 6LR61 batteries, etc. The battery is widely used in small electrical appliances in life because of its high quality and low price, convenient use, safety and environmental protection. With the development of electronic products in the direction of miniaturization and precision, they have higher and higher requirements for power supply performance, and ordinary alkaline manganese batteries cannot even meet the normal work of some products. [0003] Alkaline-manganese batteries are mainly composed of steel shell, positive electrode ring, diaphragm, zinc paste, electrolyte, and sealing body, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/06
CPCH01M6/06
Inventor 刘军平陆丽红陈立晖吴杭军
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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