Supercapacitor electrode material and preparation method thereof
A technology for supercapacitors and electrode materials, applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of small effective specific surface area, poor conductivity, insufficient energy density, etc., and achieve excellent cycle performance and good conductivity , the effect of large specific surface area
Inactive Publication Date: 2019-03-01
JIANGSU JINYI NEW ENERGY TECH CO LTD
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Abstract
The invention relates to a supercapacitor electrode material. The supercapacitor electrode material is a graphene gel/MnO2 composite material, graphite oxide is taken as a precursor, single-layer oxidized graphene is obtained by using an ultrasonic method and is dispersed into deionized water, MnCl2 is added for ultrasonic stirring and uniform dispersion, then hydrazine hydrate is added for uniform stirring to obtain a mixed solution, the mixed solution is poured into a hydrothermal reactor for a hydrothermal reaction, and suction filtration, washing and drying are carried out on a reaction product to obtain the graphene gel/MnO2 composite material. The composite material has the characteristics of great specific surface area, high electroconductibility, high capacitance and excellent cycle performance.
Application Domain
Hybrid capacitor electrodesHybrid/EDL manufacture
Technology Topic
IonCapacitance +10
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