Sea urchin-like amorphous carbon/nickel foam composites and their preparation methods and applications in supercapacitors

A technology of amorphous carbon and composite materials, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors. The effect of ion diffusion channels
CN112885612BActive Publication Date: 2022-07-12HUNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN UNIV
Publication Date
2022-07-12

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Abstract

The invention discloses a sea urchin-shaped amorphous carbon / foamed nickel composite material, a preparation method and an application in a super capacitor. The sea urchin-shaped amorphous carbon / foamed nickel composite material includes foamed nickel and amorphous carbon supported on the foamed nickel, and the amorphous carbon is sea urchin-shaped; the preparation method includes using a cobalt-based metal organic framework as a precursor, passing through water heat, the precursor is loaded on the foamed nickel, and it is calcined to prepare the sea urchin-like amorphous carbon / foamed nickel composite. The sea urchin-shaped amorphous carbon / nickel foam composite material of the invention has the advantages of stable structure and high specific capacitance, can be directly used as an electrode material for electrochemical energy storage, and has the advantages of low energy consumption, stable structure, good energy storage effect and the like.
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Description

technical field

[0001] The invention belongs to the field of supercapacitor electrode materials, and relates to a sea urchin-shaped amorphous carbon / foamed nickel composite material, a preparation method thereof, and an application in a supercapacitor. Background technique

[0002] Supercapacitors offer a new direction for the development of energy storage devices due to their superior cycle life, power density, and charge-discharge rate over conventional capacitors and rechargeable batteries. According to the mechanism of charge storage, existing supercapacitors can be divided into two types: electric double-layer capacitors and pseudocapacitors. Electric double layer capacitors mainly rely on the accumulation effect of electric charge in the electric double layer. Pseudocapacitors mainly rely on fast redox reactions during charging and discharging. For now, the further development of supercapacitors is mainly to improve their energy density. Various materials, such as p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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