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High temperature nickel-hydrogen battery

A nickel-metal hydride battery, high-temperature technology, applied in the direction of nickel storage battery, battery electrode, alkaline storage battery, etc., can solve the problems of low charging efficiency of the positive electrode, reduction of potential difference, etc., achieve the effect of increasing the potential, increasing the amount of production, and satisfying the performance

Inactive Publication Date: 2005-11-30
宜兴新兴锆业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Reaction (1) is positive Ni(OH) 2 The charging reaction of reaction (2) is the generation reaction of oxygen. As the temperature increases, the potential of reaction (2) decreases, causing the potential difference between reaction (2) and (1) to decrease. The result of the competition between these two reactions The above-mentioned low charging efficiency of the positive electrode is caused, and the charging efficiency of the battery above 50 degrees is only 40-60%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, a high-temperature nickel-hydrogen battery, including a positive electrode composed of a self-foaming nickel plate substrate and a positive electrode material, the composition and weight ratio of the positive electrode material are (%):

[0017] Nickel hydroxide 86.1

[0018] Nickel powder 3.2

[0019] Cobalt oxide 4.5

[0020] PTFE 2.0

[0021] CMC 0.4

[0022] Calcium Fluoride 1.5

[0023] Zinc oxide 0.8

[0024] Zirconium hydroxide 1.5

[0025] The method of manufacturing this high-temperature nickel-metal hydride battery is to add water and mix the components with a good ratio, stir evenly, mechanically fill them on the positive electrode substrate, dry, roll to the required electrode thickness, and cut into the designed size.

Embodiment 2

[0026] Embodiment 2, high-temperature nickel-metal hydride battery, the manufacturing method refers to embodiment 1, the composition and weight ratio of the positive electrode material are (%):

[0027] Nickel hydroxide 89.4

[0028] Cobaltous oxide 5.4

[0029] PTFE 1.1

[0030] CMC 0.4

[0031] Calcium Fluoride 1.6

[0032] Zirconia 2.1

Embodiment 3

[0033] Embodiment 3, high-temperature nickel-metal hydride battery, the manufacturing method refers to embodiment 1, the composition and weight ratio of the positive electrode material are (%):

[0034] Nickel hydroxide 87.7

[0035] Cobalt powder 2.5

[0036] Cobaltous oxide 5

[0037] MC 0.6

[0038] PTFE 1.5

[0039] Barium hydroxide 1.3

[0040] Zirconium metal 0.6

[0041] Zirconia 0.8

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Abstract

This invention relates to high temperature nickel and hydrogen battery in battery field, which comprises base board and positive electrode components, wherein the positive substance has sphere nickel hydroxide activity subject, conductor agent, adhesive agent and addictive agent, wherein the addictive agent is of calcium fluoride, zinc oxide, barium hydrate, erbium oxide, yttrium oxide. The invention improves the positive electrode reaction level and adds the NiOOH quantity through adding zirconium element into the positive subjects.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a nickel-metal hydride battery. technical background [0002] In general ordinary nickel-hydrogen batteries, the positive electrode material on the positive electrode substrate is composed of spherical nickel hydroxide active material, conductive agent, binder, and additives. The additives are usually calcium fluoride, zinc oxide, barium hydroxide, erbium oxide, One or a combination of diyttrium trioxide, the following two reactions occur at the positive electrode during charging: [0003] <chemistry num="001"> <chem file="200510040591_cml001.xml" / > < / chemistry> (1) [0004] <chemistry num="002"> <chem file="200510040591_cml002.xml" / > < / chemistry> (2) [0005] Reaction (1) is positive electrode Ni(OH) 2 The charging reaction of reaction (2) is the generation reaction of oxygen. As the temperature increases, the potential of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/52H01M10/30
CPCY02E60/124Y02E60/10
Inventor 杨新民陈名才
Owner 宜兴新兴锆业有限公司
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