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Rare earth alloy doped zinc-manganese battery and preparation method thereof

A zinc-manganese battery, rare earth alloy technology, applied in dry batteries, battery electrodes, circuits, etc., can solve the problems of short service life and insufficient discharge performance, reduce the corrosion rate of hydrogen evolution, strong resistance to acid and alkali corrosion of electrolyte, The effect of increasing the operating temperature

Active Publication Date: 2019-11-22
宁波双鹿新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above deficiencies in the prior art, the technical problem to be solved in the present invention is to provide a zinc-manganese battery doped with a rare earth alloy and a preparation method thereof for the insufficient discharge performance of the zinc-manganese battery and the problem of short service life. , which improves the discharge performance of the zinc-manganese battery, prevents the problems of battery expansion, liquid leakage and gas formation during the use of the battery, and at the same time makes it have many advantages such as stable performance and long service life, which is more conducive to large-scale production. Scale promotion and application

Method used

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  • Rare earth alloy doped zinc-manganese battery and preparation method thereof

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Effect test

Embodiment 1

[0033] A zinc-manganese battery doped with a rare earth alloy, the zinc-manganese battery includes a positive electrode ring, a negative electrode zinc paste, a diaphragm and an electrolyte, the positive electrode ring is composed of electrolytic manganese dioxide, a conductive agent and an electrolyte solution, and the negative electrode zinc The paste is composed of the following raw materials in mass fractions: 57.99wt% zinc powder, 1.5wt% binder, 40wt% electrolyte, 0.5wt% composite additive and 100ppm rare earth metal.

[0034] The zinc powder is nano zinc powder with a particle diameter of 500nm.

[0035] The binder is composed of carboxymethyl cellulose and polyacrylic acid, and the mass ratio of carboxymethyl cellulose and polyacrylic acid is 2:1.

[0036] The electrolyte is composed of the following raw materials in parts by weight: 10 parts of potassium hydroxide, 30 parts of disodium tetrahydroxy zincate and 40 parts of deionized water.

[0037] The rare earth metal...

Embodiment 2

[0052] A zinc-manganese battery doped with a rare earth alloy, the zinc-manganese battery includes a positive electrode ring, a negative electrode zinc paste, a diaphragm and an electrolyte, the positive electrode ring is composed of electrolytic manganese dioxide, a conductive agent and an electrolyte solution, and the negative electrode zinc The paste is composed of the following raw materials by mass fraction: 64.95wt% zinc powder, 3.6wt% binder, 29.6wt% electrolyte, 1.8wt% composite additive and 500ppm rare earth metal. The zinc powder is nanometer zinc powder with a particle diameter of 600nm.

[0053] The binder is composed of carboxymethyl cellulose, sodium silicate and polymethacrylate. The mass ratio of carboxymethyl cellulose, sodium silicate and polymethacrylate is 2:1:1.

[0054] The electrolyte is composed of the following raw materials in parts by weight: 30 parts of potassium hydroxide, 20 parts of disodium tetrahydroxy zincate and 60 parts of deionized water. ...

Embodiment 3

[0070] A zinc-manganese battery doped with a rare earth alloy, the zinc-manganese battery includes a positive electrode ring, a negative electrode zinc paste, a diaphragm and an electrolyte, the positive electrode ring is composed of electrolytic manganese dioxide, a conductive agent and an electrolyte solution, and the negative electrode zinc The paste is composed of the following raw materials in mass fraction: 65.9wt% zinc powder, 6wt% binder, 25wt% electrolyte, 3wt% composite additive and 1000ppm rare earth metal.

[0071] The zinc powder is nano zinc powder with a particle diameter of 900nm.

[0072] The binder is composed of carboxymethyl cellulose, sodium silicate, polyacrylic acid and polymethacrylate. The mass ratio of carboxymethyl cellulose, sodium silicate, polyacrylic acid and polymethacrylate is 3:0.5:1:1.5.

[0073] The electrolyte is composed of the following raw materials in parts by weight: 50 parts of potassium hydroxide, 30 parts of disodium tetrahydroxy z...

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Abstract

The invention discloses a rare earth alloy doped zinc-manganese battery. The zinc-manganese battery comprises a positive electrode ring, negative electrode zinc paste, a diaphragm and electrolyte, wherein the positive electrode ring is composed of electrolytic manganese dioxide, a conductive agent and an electrolyte, and the negative electrode zinc paste is composed of the following raw materialsin percentage by mass: 58-71 wt% of zinc powder, 1.5-6 wt% of a binder, 25-42 wt% of an electrolyte, 0.5-3 wt% of a composite additive and 100-1000 ppm of rare earth metal. The zinc-manganese batterydisclosed by the invention is not added with any lead-containing and mercury-containing material, the problems of battery expansion, liquid leakage, gassing and the like are not easily generated in the use process, and the prepared battery is environment-friendly, safe, stable in performance and long in service life. The invention further discloses a preparation method of the rare earth alloy doped zinc-manganese battery.

Description

technical field [0001] The invention relates to the technical field of zinc-manganese batteries, in particular to a zinc-manganese battery doped with a rare earth alloy and a preparation method thereof. Background technique [0002] Zinc-manganese batteries are widely used in civil and industrial applications, especially for flash cameras, mini-recorders, video cameras, walkie-talkies, shavers, palm-type color TVs and game consoles, toys, telemeters, alarms, calculators, hearing aids, flashlights and electric appliances. Clocks and other instruments and equipment. With the increasing functions of instruments and equipment, the requirements for high-power and high-current discharge performance of zinc-manganese batteries are getting higher and higher. [0003] Zinc paste is an important component material for the preparation of zinc-manganese batteries, and its performance plays a key role in the discharge capacity and service life of zinc-manganese batteries. Although some...

Claims

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Application Information

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IPC IPC(8): H01M4/38H01M4/62H01M6/06
CPCH01M4/38H01M4/628H01M6/06H01M2004/027
Inventor 张杰张凯明江丽军谢斌辉
Owner 宁波双鹿新能源科技有限公司
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