Supercapacitor electrode material and preparation method thereof

A technology for supercapacitors and electrode materials, applied in hybrid capacitor electrodes, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of serious agglomeration, low conductivity, and low specific surface area, and achieve short reaction time, excellent performance, and improved The effect of conductivity
CN112374544AInactive Publication Date: 2021-02-19犀望新能源科技(昆山)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
犀望新能源科技(昆山)有限公司
Publication Date
2021-02-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a supercapacitor electrode material and a preparation method thereof. The preparation method comprises the following steps of: by taking potassium permanganate as a reducing agent and manganese sulfate as a manganese source, preparing sea urchin-shaped nano alpha-MnO2 by adopting a hydrothermal method, then performing hydroxylation modification, grafting polyimide resin tothe sea urchin-shaped nano alpha-MnO2 by adopting a click chemistry mode to obtain the sea urchin-shaped nano alpha-MnO2 grafted polyimide resin, and carrying out high-temperature activation treatmenton the sea urchin-shaped nanometer alpha-MnO2 grafted polyimide resin by adopting potassium hydroxide to obtain the sea urchin-shaped nanometer alpha-MnO2 in-situ modified porous carbon supercapacitor electrode material. By using the electrode material, the defects of MnO2 crystal lattices are improved, the conductivity and stability of electrons are improved, protons and the electrons can freelyflow among the crystal lattices, rapid transmission of ions and the electrons of an interface is guaranteed, the charge transfer path can be shortened, more active sites are provided for charge storage, the electron trapping and transfer capacity is enhanced, and the mechanical stability is also improved.
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Description

technical field

[0001] The invention relates to the field of composite electrode materials for supercapacitors, in particular to a supercapacitor electrode material and a preparation method thereof. Background technique

[0002] Energy and the environment are the basis for the survival, development and development of human beings. The increasingly prominent energy and environmental crisis has attracted widespread attention from all over the world, and has become a key factor in the orientation of energy and technology in various countries. In order to achieve sustainable economic and social development, research on renewable and green energy storage devices has become a hot spot in current scientific research.

[0003] Supercapacitor is an energy storage device between batteries and traditional electrostatic capacitors. It has high power density, no pollution, long cycle life and other excellent properties and is widely used. The existing supercapacitor electrode materials ...

Claims

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