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Nickel-metal hydride battery positive electrode powder material and preparation method of nickel-metal hydride battery

A nickel-metal hydride battery and powder material technology, which is applied to battery electrodes, nickel storage batteries, alkaline storage battery electrodes, etc., can solve the problems of low discharge efficiency, achieve high discharge efficiency, good low-temperature discharge performance, and simple procedures

Inactive Publication Date: 2015-01-07
陕西德飞新能源科技集团有限公司大荔分公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a nickel-hydrogen battery cathode powder material, which solves the technical problem of low discharge efficiency of nickel-hydrogen batteries in the prior art under low temperature environment

Method used

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  • Nickel-metal hydride battery positive electrode powder material and preparation method of nickel-metal hydride battery
  • Nickel-metal hydride battery positive electrode powder material and preparation method of nickel-metal hydride battery
  • Nickel-metal hydride battery positive electrode powder material and preparation method of nickel-metal hydride battery

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preparation example Construction

[0032] The present invention also provides a kind of preparation method of nickel-metal hydride battery, specifically implement according to the following steps:

[0033] Step 1: Weigh the components required for the positive electrode of the Ni-MH battery,

[0034] Weigh 35% to 60% spherical Ni(OH) according to mass percentage 2 , 35%~62% cobalt-coated spherical Ni(OH) 2 , 2.5% to 6% of CoO powder, 0.5% to 1.0% of binder, the sum of the mass percentages of the above components is 100%, and the weighed CoO powder is passed through a 100 mesh sieve for later use, wherein the binder is PT micropowder;

[0035] Step 2: Mix the components weighed in step 1 and stir manually until the CoO powder and binder are invisible to the naked eye;

[0036] Step 3: Add the mixed powder prepared in step 2 into the powder mixer, turn on the revolution switch and the forced stirring switch to mix the powder, the mixing time is 2h~3h, and the positive electrode powder is obtained. The powder m...

Embodiment 1

[0053] Weigh each component of the positive electrode according to mass percentage, 35% spherical Ni(OH) 2 , 62% cobalt-coated spherical Ni(OH) 2 , 2.5% CoO powder, 0.5% binder, the sum of the mass percentages of the above components is 100%, and the weighed CoO powder is passed through a 100 mesh sieve for later use, and manually stirred until the CoO powder and the binder are not visible to the naked eye. It can be seen that it is added to the powder mixing machine at the end, and the powder mixing time is 3 hours. Fill the mixed positive electrode powder into the foamed nickel matrix printed on the ear position, roll it into a sheet, and roll it into a sheet of foam. The foamed nickel base body is cut into positive pole pieces, and then the tabs of the cut positive pole pieces are spot-welded with pure nickel strip tabs, and the positive pole pieces welded with pure nickel strip tabs are softened to obtain finished positive pole pieces;

[0054] Weigh the negative electrod...

Embodiment 2

[0057] Weigh each component of the positive electrode according to mass percentage, 60% spherical Ni(OH) 2 , 35% cobalt-coated spherical Ni(OH) 2 , 4% CoO powder, 1% binder, the sum of the mass percentages of the above components is 100%, and the weighed CoO powder is passed through a 100-mesh sieve for later use, and manually stirred until the CoO powder and the binder are not visible to the naked eye. It can be seen that it is added to the powder mixing machine at the end, and the powder mixing time is 2 hours. Fill the mixed positive electrode powder into the foamed nickel matrix printed on the ear position, roll it into a sheet, and roll it into a sheet of foam. The foamed nickel base body is cut into positive pole pieces, and then the tabs of the cut positive pole pieces are spot-welded with pure nickel strip tabs, and the positive pole pieces welded with pure nickel strip tabs are softened to obtain finished positive pole pieces;

[0058] Weigh the negative electrode hy...

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Abstract

The invention provides a nickel-metal hydride battery positive electrode powder material. The nickel-metal hydride battery positive electrode powder material is composed of the following components in percentage by mass: 35%-60% of spherical Ni(OH)2, 35%-62% of cobalt-cladded spherical Ni(OH)2, 2.5%-6% of CoO powder and 0.5%-1.0% of a binding agent; and the sum of the mass percents of all the components is 100%. Meanwhile, the invention further provides a preparation method of a nickel-metal hydride battery. The nickel-metal hydride battery prepared by the preparation method has good low-temperature discharging performance, high discharging efficiency and low self discharge.

Description

technical field [0001] The invention belongs to the technical field of chemical power sources, and relates to a nickel-hydrogen battery cathode powder material, and also relates to a method for preparing a nickel-hydrogen battery using the nickel-hydrogen battery cathode powder material. Background technique [0002] As mobile power is used more and more widely in people's lives, people have more and more stringent requirements on the performance of batteries during use, such as poor thermal effects of batteries, poor high-temperature charging performance, and large self-discharge. At the same time, under the condition of ultra-low temperature, the discharge efficiency of the battery is low and the self-discharge is large, which seriously affects the use of people. At present, the positive electrode of the nickel-metal hydride battery on the market is made of simple ordinary spherical nickel and cobalt oxide. The battery manufactured using this formula The ionic and electron...

Claims

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Application Information

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IPC IPC(8): H01M4/32H01M4/26
CPCH01M4/364H01M4/52H01M10/286H01M10/30Y02E60/10
Inventor 张杰王图强贾飞温杨厚胤
Owner 陕西德飞新能源科技集团有限公司大荔分公司
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