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Negative plate of secondary nickel-hydrogen battery and manufacturing method thereof

A technology of nickel-hydrogen battery and production method, which is applied to nickel storage battery, battery electrode, alkaline storage battery electrode and other directions, can solve the problems of expensive alloy powder and high cost of negative electrode production

Active Publication Date: 2021-03-30
SHENZHEN EPT BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the production method of the negative electrode of the secondary nickel-hydrogen battery, more than 98% of the active material is usually rare earth hydrogen storage alloy powder (hereinafter referred to as the alloy powder). The alloy powder is relatively expensive, and the production cost of the negative electrode is relatively high.

Method used

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  • Negative plate of secondary nickel-hydrogen battery and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Mix and stir alloy powder, ferric oxide, nickel hydroxide, ferrous sulfide, graphite, and binder in a weight ratio of 80:18.5:0.5:0.5:0.5:32 to obtain slurry, and apply the slurry to The steel strip is rolled and cut to obtain the negative electrode sheet.

Embodiment 2

[0057] Mix alloy powder, ferric oxide, nickel hydroxide, ferrous sulfide, graphite, and binder in a weight ratio of 70:27.5:1:1:0.5:34 to obtain a slurry, and apply the slurry to The steel strip is rolled and cut to obtain the negative electrode sheet.

Embodiment 3

[0059] Mix and stir alloy powder, ferric oxide, nickel hydroxide, ferrous sulfide, graphite, and binder at a weight ratio of 60:37:1:1.5:0.5:34 to obtain a slurry, and apply the slurry to The steel strip is rolled and cut to obtain the negative electrode sheet.

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Abstract

The invention discloses a negative electrode sheet of a secondary nickel-hydrogen battery and a preparation method thereof. The preparation method of the negative electrode sheet of the secondary nickel-hydrogen battery comprises the steps that rare earth hydrogen storage alloy powder is used as an active material, an appropriate amount of ferriferous oxide, graphite, nickel hydroxide, and ferroussulfide are used as additives, a polymer material binder is added, stirred, and mixed to form a slurry, and the slurry is applied onto a negative electrode sheet substrate and dried to prepare a negative electrode sheet. According to the negative electrode sheet of the secondary nickel-hydrogen battery, the performance of the negative electrode sheet is no lower than that of a negative electrodesheet which is prepared by relatively expensive pure alloy powder and a binder, the cost is significantly lowered, and the materials are environmentally friendlier.

Description

technical field [0001] The invention relates to a secondary battery, in particular to a negative electrode sheet of a secondary nickel-hydrogen battery and a manufacturing method thereof. Background technique [0002] At present, as wireless phones, personal care appliances, digital products, lamps and other equipment have higher and higher requirements for the standby and use time of secondary batteries, the manufacturing cost is getting higher and higher, and the market demand often requires lower prices to buy For better products, this demand has promoted the research and development of low-cost materials for secondary Ni-MH batteries. [0003] At present, in the negative electrode manufacturing method of the secondary nickel-hydrogen battery, more than 98% of the active material is usually rare earth hydrogen storage alloy powder (hereinafter referred to as alloy powder). The alloy powder is relatively expensive, and the production cost of the negative electrode is relat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/28H01M4/24H01M4/36H01M4/38H01M4/62H01M10/30
CPCY02E60/10
Inventor 韦力群王守军曹胜龙张东明梁凤美
Owner SHENZHEN EPT BATTERY
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