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Nickelous hydroxide in positive pole material of alkaline secondary cell and producing method thereof

A nickel hydroxide and secondary battery technology, applied in the direction of alkaline battery electrodes, nickel oxide/nickel hydroxide, battery electrodes, etc., can solve the problems of easy pulverization, high cost, and easy agglomeration of nanomaterials, and achieve capacity Improve, avoid easy pulverization, improve the effect of comprehensive performance

Inactive Publication Date: 2010-09-22
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the fact that nanomaterials are easy to agglomerate, high cost, and easy to pulverize during the battery charge-discharge cycle, they cannot be widely used as cathode materials for alkaline secondary batteries.

Method used

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  • Nickelous hydroxide in positive pole material of alkaline secondary cell and producing method thereof
  • Nickelous hydroxide in positive pole material of alkaline secondary cell and producing method thereof
  • Nickelous hydroxide in positive pole material of alkaline secondary cell and producing method thereof

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Embodiment

[0026] A mixed solution of 1334g of analytically pure nickel sulfate, 33g of cobalt sulfate, 61g of zinc sulfate and secondary deionized water was stirred and dissolved in the reactor and heated to 90°C, and the urea solution that had been heated to 90°C was added to the reactor , the mass of urea is 900g. Add secondary deionized water that has been heated to 90 °C until the total solution reaches 7 L. Stir and heat to 100±1°C, continue heating for half an hour, then add yttrium nitrate solution containing 192g of yttrium nitrate, and continue to react at this temperature for 1.5 hours. Filter with suction, wash with distilled water until the pH value of the filtrate is neutral, then wash with absolute ethanol for 3 to 5 times, and dry at 70°C until constant weight. The resulting particles were monodisperse light green particles. for the particle figure 1 and figure 2 SEM test. The above-prepared nickel hydroxide is used to replace part of the ordinary spherical cobalt-c...

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Abstract

The invention relates to nickel hydroxide in alkaline secondary battery anode material and a preparation method thereof. The particle grain diameter of the nickel hydroxide is 100nm-1mum; the preparing process is as follows: 1) the mixing solution of nickel salt, cobalt salt and zinc salt with a temperature of 80-120 DEG C and urea solution are mixed to diluted, and the temperature is kept 90-120DEG C, and a reaction system is formed by maintaining 0.5-5 hours; 2) yttrium salt solution with a temperature of 80-120 DEG C is poured into a reaction system and the temperature is kept 90-120 DEG C, then the reaction is carried out for 0.5-5 hours continuously, and filtration, washing and drying are carried out for forming submicron particles. The nickel hydroxide obtained by adopting the method has the advantages of small particles and big specific surface. The nickel hydroxide is doped into common sphere nickel hydroxide as the alkaline secondary battery anode material to manufacture thebatteries; therefore, high power performance and high temperature performance of the battery are improved on the basis of ensuring the high capacity, and the nickel hydroxide can be applied to nickel-hydrogen batteries, nickel-cadmium batteries and nikel-zinc batteries.

Description

technical field [0001] The invention belongs to the technical field of alkaline secondary battery materials, in particular to a method for preparing nickelous hydroxide in the positive electrode material of alkaline secondary batteries. Background technique [0002] In recent years, with the development of electric vehicles and mobile communications, people have put forward higher and higher requirements for the comprehensive performance of batteries such as high power performance, high temperature performance and high battery capacity. As an alkaline secondary battery, Ni(II) hydroxide has been widely used in its positive electrode materials, such as nickel-metal hydride batteries, nickel-cadmium batteries, nickel-zinc batteries, etc. The currently recognized method to improve the high-temperature performance of the battery is to add materials such as diyttrium trioxide to the active material of the battery or to coat the surface of spherical nickel hydroxide particles dope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/52H01M4/24C01G53/04
CPCY02E60/124Y02E60/10
Inventor 张健王琳霞张雄樊琳李建凤
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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