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Method for producing high temperature nickel-metal hydride battery

A nickel-metal hydride battery and a manufacturing method technology, which are applied in the manufacture of alkaline storage batteries, battery electrodes, alkaline storage batteries, etc., can solve the problems of low battery specific capacity and high battery cost, increase the ratio of high-temperature charge and discharge capacity, and avoid rare earth elements. The use of, the effect of improving high temperature performance

Active Publication Date: 2012-07-04
QUANZHOU JINTION ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a high-temperature nickel-metal hydride battery and a manufacturing method thereof, the purpose of which is to overcome the defects of high battery cost and low specific capacity of the battery in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for manufacturing a high-temperature nickel-hydrogen battery, comprising the steps of preparation of γ-CoOOH powder, preparation of positive electrode, preparation of electrolyte, selection of diaphragm, winding and the like.

[0025] Preparation of γ-CoOOH powder: CoCl 2 After mixing , pure water and NaCl, add ammonia water and adjust the pH value to 8, continue to stir for 1 hour, filter out the precipitate, wash the precipitate with water, dry and crush it, then dissolve it in pure A mixed solution is formed in water, and then NaClO solution is continuously added to the mixed solution. The mass ratio of the total amount of oxidant solution added to the mixed solution is 1:1, the addition time is controlled at 1h, the pH value is controlled at 11, and the reaction temperature is controlled at 20°C After the completion, the solid precipitate was collected by filtration, and the γ-CoOOH powder was made into γ-CoOOH powder through processes such as washing, dryi...

Embodiment 2

[0031] A method for manufacturing a high-temperature nickel-hydrogen battery, comprising the steps of preparation of γ-CoOOH powder, preparation of positive electrode, preparation of electrolyte, selection of diaphragm, winding and the like.

[0032] Preparation of γ-CoOOH powder: CoCl 2 , pure water and NaCl are mixed, add ammonia water and adjust the pH value to 12, continue to stir for 1 hour, filter out the precipitate, wash the precipitate with water, dry and crush it, then dissolve it in pure A mixed solution is formed in water, and then NaClO solution is continuously added to the mixed solution. The mass ratio of the total amount of oxidant solution added to the mixed solution is 1:1, the addition time is controlled at 2 hours, the pH value is controlled at 14, and the reaction temperature is controlled at 50°C After the completion, the solid precipitate was collected by filtration, and the γ-CoOOH powder was made into γ-CoOOH powder through processes such as washing, d...

Embodiment 3

[0038] This embodiment is the best embodiment, a method for manufacturing a high-temperature nickel-metal hydride battery, including steps such as preparation of γ-CoOOH powder, preparation of positive electrode, preparation of electrolyte, selection of diaphragm, and winding.

[0039] Preparation of γ-CoOOH powder: CoCl 2 After mixing , pure water and NaCl, add ammonia water and adjust the pH value to 10, continue to stir for 1 hour, filter out the precipitate, wash the precipitate with water, dry and crush it, then dissolve it in pure A mixed solution is formed in water, and then NaClO solution is continuously added to the mixed solution. The mass ratio of the total amount of oxidant solution added to the mixed solution is 1:1, the addition time is controlled at 4 hours, the pH value is controlled at 12, and the reaction temperature is controlled at 40°C After the completion, the solid precipitate was collected by filtration, and the γ-CoOOH powder was made into γ-CoOOH powd...

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Abstract

The invention discloses a method for producing a high temperature nickel-metal hydride battery. The method comprises the steps of preparing gamma-CoOOH powder, producing anode, preparing electrolyte, selecting a diaphragm, winding and the like. In the method, gamma-CoOOH powder is used as an additive to be filled in the anode, and a polypropylene diaphragm subjected to grafting or fluoridation treatment is adopted as the battery diaphragm, thereby effectively improving the high temperature performance of the nickel-metal hydride battery, avoiding the use of rare earth elements, and further greatly reducing the production cost (the cost of the additive is saved by 20 percent).

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for manufacturing a high-temperature nickel-hydrogen battery capable of maintaining relatively high charging and discharging efficiency under high-temperature conditions. Background technique [0002] In recent years, due to the enhancement of people's awareness of environmental protection, the serious air pollution caused by automobile exhaust to the urban environment has been highly valued by the governments of various countries. The use of electric vehicles (EV, HEV) is considered to be an effective way to solve this problem. Compared with traditional nickel-cadmium batteries, nickel-metal hydride batteries have superior performances such as high energy density and high power density, no pollution, long life and good safety, and are regarded as the research and development focus of EV and HEV power batteries. However, due to the narrow operating temperature range of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/16H01M4/1391H01M10/28
CPCY02E60/124Y02E60/122Y02E60/126Y02E60/10Y02P70/50
Inventor 陈端典陈文明李培坤张桂生尹纯
Owner QUANZHOU JINTION ELECTRONICS
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