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Electrolytic preparing method for high-energy alkaline primary cell anode material

A battery positive and alkaline technology, applied in the field of chemical power materials, can solve the problems that cannot withstand experimental verification and theoretical scrutiny, and achieve the effects of convenient industrial production, convenient operation and control, and high efficiency

Inactive Publication Date: 2005-02-16
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent with the application number CN 03153572.0 is nothing more than the idea of ​​replacing manganese sulfate with nickel salt and hoping to prepare nickel oxyhydroxide by electrolytic manganese dioxide, which cannot withstand experimental verification and theoretical scrutiny.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Dissolve 1Kg of nickel chloride hexahydrate with deionized water, add 100 grams of sodium sulfate to make a 5L solution, filter, take the clear solution as the electrolyte, and the nickel content in the electrolyte is 0.2mol / L, and the sodium content is 0.1 mol / L; use sodium hydroxide to adjust the pH of the electrolyte to 7.5, control the temperature of the solution to 50°C, and use 0.1dm 2 The two titanium plates are the positive and negative electrodes, and the electrolysis is carried out with a current of 3A. After 1 hour, the anode plate was taken out, the nickel oxyhydroxide deposited on it was peeled off, cleaned with deionized water, dried at 100°C, and then ground with a ball mill to obtain a black nickel oxyhydroxide finished product.

Embodiment 2

[0027] Dissolve 1Kg of nickel chloride hexahydrate with deionized water, and add 100 grams of sodium sulfate to make a 5L solution, filter, take the clear solution as the electrolyte, and the nickel content in the electrolyte is 0.5mol / L, and the sodium content is 0.08 mol / L; use potassium hydroxide to adjust the pH of the electrolyte to 8.0, control the temperature of the solution to 70°C, and use 0.1dm 2 The two lead plates are the positive and negative electrodes respectively, and the electrolysis is carried out with a current of 2A. After 1 hour, the anode plate was taken out, the nickel oxyhydroxide deposited on it was peeled off, cleaned with deionized water, dried at 90°C, and then ground with a ball mill to obtain a black nickel oxyhydroxide finished product.

Embodiment 3

[0029] Dissolve 1Kg of nickel chloride hexahydrate with deionized water, and add 100 grams of sodium sulfate to make a 5L solution, filter, take the clear solution as the electrolyte, and the nickel content in the electrolyte is 1.0mol / L, and the sodium content is 0.15 mol / L; use sodium hydroxide to adjust the pH of the electrolyte to 10, control the temperature of the solution to 30°C, and use 0.1dm 2 The two graphite plates are the cathode and anode electrodes, and electrolysis is performed with a current of 1A. After 1 hour, the anode plate was taken out, the nickel oxyhydroxide deposited on it was peeled off, cleaned with deionized water, dried at 110° C., and then ground with a ball mill to obtain a black nickel oxyhydroxide finished product.

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Abstract

The invention related to method for preparing hydroxy-nickel oxide includes following steps: dissolving nickel chloride in deionized water and preparing electrolyte; adding the said electrolyte into electrobath with inert material being as electrode; adjusting pH value and carrying out electroanalysis step; taking hydroxy-nickel oxide on anodic plate off, through cleaning, drying, milling and sieving steps to obtain hydroxy-nickel oxide. Comparing with procedure of using nickel hydroxide, the invented method possesses advantages as follows: low cost, high efficiency, with no wastewater treatment, carrying out reaction system in closed cycle, and availability of equipment for producing manganese dioxide.

Description

technical field [0001] The invention relates to a chemical power source material, in particular to a method for preparing a high-energy alkaline primary battery cathode material nickel oxyhydroxide. Background technique [0002] The continuous development of portable electronic products has put forward new requirements for the batteries used in them, especially the ever-emerging popular digital products have put forward higher requirements for batteries. When digital cameras first came out, most models used alkaline manganese batteries, but when alkaline manganese batteries were used in digital cameras that required high-power discharge, the discharge voltage would drop sharply, and it would be impossible to use only about 10% of the capacity. Work. As a result, the batteries used in digital cameras are transferred from alkaline manganese batteries to nickel-metal hydride rechargeable batteries and lithium-ion rechargeable batteries. However, Ni-MH rechargeable batteries a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00C25B1/00H01M4/04H01M4/52
CPCY02E60/10
Inventor 廖代伟符显珠李俊卢成慧林敬东
Owner XIAMEN UNIV
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