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Method for preparing carbon/nano manganese dioxide composite electrode material

A nano-manganese dioxide and composite electrode technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of complex preparation process, high synthesis temperature, and harsh conditions, and achieve simple equipment and preparation process, The effect of cheap raw materials and convenient operation

Inactive Publication Date: 2020-06-02
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The preparation of existing carbon / manganese dioxide composite materials often needs to be obtained by electrochemical deposition, hydrothermal and other methods. application

Method used

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  • Method for preparing carbon/nano manganese dioxide composite electrode material
  • Method for preparing carbon/nano manganese dioxide composite electrode material
  • Method for preparing carbon/nano manganese dioxide composite electrode material

Examples

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Embodiment 1

[0028] A: Preparation of carbon / manganese dioxide composite electrode materials by ultraviolet light reduction method

[0029] A carbon film was prepared on the surface of a titanium sheet electrode by hydrothermal carbonization reaction using glucose aqueous solution as precursor. Soak the carbon film-covered titanium sheet electrode material in an aqueous solution of potassium permanganate at a room temperature of about 25°C, and irradiate it with ultraviolet light for a period of time to grow nano-manganese dioxide on the surface of the carbon film. Wherein the volume of the above-mentioned aqueous glucose solution is 40 mL, and the mass fraction of glucose is 5%. The reaction temperature of the hydrothermal carbonization reaction method is 190° C., and the reaction time is 5 h. Potassium permanganate aqueous solution has a volume of 20 mL and a concentration of 0.01 mol / L. The power of the ultraviolet lamp is 48W, the distance between the lamp source and the liquid surfa...

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Abstract

The invention relates to a method for preparing a carbon / nano manganese dioxide composite electrode material. The method comprises the steps of: soaking the electrode or the carbon electrode covered by the carbon material in a potassium permanganate aqueous solution at 10-40 DEG C, and irradiating the potassium permanganate aqueous solution by adopting ultraviolet light, so that nano manganese dioxide grows on the surface of the carbon material in situ, and the carbon / nano manganese dioxide composite electrode material is obtained.

Description

technical field [0001] The invention relates to a method for rapidly preparing a carbon / nano manganese dioxide composite electrode material, in particular to a method for rapidly preparing a carbon / nano manganese dioxide composite electrode material at room temperature, and belongs to the technical field of functional material preparation. Background technique [0002] With the rapid development of economy and society and the rapid growth of population density, the world energy crisis has become more and more serious. Whether it is traditional energy or new renewable energy, effective energy storage is very important for energy security, stable and continuous supply. A supercapacitor is a device that stores energy primarily by means of an electric double layer and faraday capacitance. Compared with traditional power supplies, supercapacitors have high power density, short charge and discharge time, and long cycle life. The research and development of related materials has a...

Claims

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Application Information

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IPC IPC(8): H01G11/32H01G11/46H01G11/30H01G11/86
CPCH01G11/30H01G11/32H01G11/46H01G11/86Y02E60/13
Inventor 李恺刘诗伟郑学斌
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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