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Preparation method of cathode material for high-power alkaline manganese battery

A technology of alkaline manganese batteries and positive electrode materials, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of unsatisfactory performance, small discharge capacity of medium and high voltage sections, and low load voltage, so as to improve deep discharge capacity, The effects of stable lattice structure and increased discharge capacity

Active Publication Date: 2012-02-29
武汉格罗夫新能源汽车研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the performance in high current and high power discharge is still not very ideal. The specific performance is: the load voltage is low and the drop speed is fast, the capacity of the medium and high voltage section and the total discharge capacity are small, or even cannot work at all, and cannot fully utilize manganese dioxide.

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  • Preparation method of cathode material for high-power alkaline manganese battery
  • Preparation method of cathode material for high-power alkaline manganese battery
  • Preparation method of cathode material for high-power alkaline manganese battery

Examples

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Embodiment 1

[0021] Embodiment 1: adopt the preparation method of the present invention to prepare a kind of positive electrode material that is used for high-power alkaline manganese battery, take manganese nitrate as raw material, take mesoporous silica as template agent, take bismuth salt as dopant, according to manganese Salt solution, bismuth salt solution and the ratio of the mass parts of template agent is 1: (0.01~0.5): (2~10), weigh 2 parts of manganese nitrate solution, add 50 parts of distilled water, add 1 part of bismuth nitrate, mix After uniformity, add 20 parts of mesoporous silica template, stir evenly, make the manganese salt adhere to the template by liquid phase impregnation method, and then dry; calcinate the dried mixture at 100°C for 8 hours (hours) to oxidize the manganese salt The reduction reaction produces bismuth-doped mesoporous manganese dioxide, and a dark brown substance is obtained. According to the mass fraction of bismuth-doped mesoporous manganese dioxid...

Embodiment 2

[0023] Embodiment 2: Adopt the preparation method of the present invention to prepare a kind of positive electrode material for high-power alkaline manganese battery, take 1 part of manganese chloride solution according to the ratio of mass and number, add 50 parts of distilled water, add 0.1 part of bismuth nitrate solution, mix well Finally, add 8 parts of mesoporous silica template, stir evenly, make manganese salt adhere to the template by liquid phase impregnation method, and then dry; calcinate the dried mixture at 1000°C for 2 hours to obtain a dark brown substance, according to the method of bismuth-doped mesoporous The mass fraction of manganese dioxide and sodium hydroxide solution is 1: (10~100) ratio, 10 parts of 1mol / L sodium hydroxide solution is used to remove the silicon template, and the obtained black precipitate is separated by filtration and washed with distilled water. , after drying at a temperature of 80°C, a bismuth-doped mesoporous manganese dioxide ele...

Embodiment 3

[0024] Embodiment 3: adopt the preparation method of the present invention to prepare a kind of positive electrode material for high-power alkaline manganese battery, take 2 parts of manganese sulfate solution according to the ratio of mass and number, add 50 parts of distilled water, add bismuth nitrate 0.5 solution, after mixing uniformly, Add 8 parts of mesoporous silica template, stir evenly, attach the manganese salt to the template by liquid phase impregnation method, and then dry it; calcinate the dried mixture at 800°C for 2 hours to obtain a dark brown substance. The mass fraction of manganese oxide and sodium hydroxide solution is 1: (10~100), use 50 parts of 0.5mol / L sodium hydroxide solution to remove the silicon template, filter and separate the obtained black precipitate, and wash the precipitate with distilled water , after drying at a temperature of 80°C, a bismuth-doped mesoporous manganese dioxide electrode material product was obtained, with a discharge capac...

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Abstract

The invention relates to a preparation method of a cathode material for a high-power alkaline manganese battery. The preparation method comprises the following steps of: dissolving a manganese salt solution, a bismuth salt solution and a template agent in water by using inorganic manganese salt as a raw material, mesoporous silicon dioxide as the template agent and bismuth salt as a doping agent, uniformly mixing, attaching the manganese salt onto a template by a liquid phase immersion method, and drying the solution; and calcining to ensure that the manganese salt is subjected to an oxidation reduction reaction to generate bismuth-doped mesoporous manganese dioxide, removing the template by using a sodium hydroxide solution, filtering for separation, washing by using distilled water, precipitating, drying, and thus obtaining a bismuth-doped mesoporous manganese dioxide electrode material. The bismuth-doped mesoporous manganese dioxide electrode material prepared by the method is used as the cathode material for the high-power alkaline manganese battery and has a discharging property which is much more than the property of the conventional manganese dioxide, so that the utilization rate of an active ingredient in the cathode material of the alkaline manganese battery is greatly improved.

Description

technical field [0001] The invention relates to a preparation method of a positive electrode material for a high-power alkali-manganese battery, which is a method for preparing bismuth-doped mesoporous manganese dioxide by a liquid-phase impregnation method for making a high-power primary alkaline-manganese battery positive electrode material. Background technique [0002] The development of human society is inseparable from energy. With the rapid growth of population and the rapid development of social economy, the problem of energy shortage has become increasingly prominent. Especially with the rapid development of the electronic industry, the new generation of electronic products has higher and higher performance requirements for power supplies, which have approached or exceeded the current standard design capabilities of batteries. In order to meet the normal work of electronic products, the development of large capacity, high power , long life, pollution-free, safe, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/50
CPCY02E60/10
Inventor 杨超田熙科徐银萍王焰新
Owner 武汉格罗夫新能源汽车研究院有限公司
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