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Indexed by:期刊论文

Date of Publication:2022-06-30

Journal:新型炭材料

Volume:29

Issue:1

Page Number:55-60

ISSN No.:1007-8827

Abstract:Activated carbons (ACs) were prepared by CO2 activation using depleted fullerene soot as precursor. The structure of the ACs was investigated by TEM, XRD, and nitrogen adsorption. Their electrochemical properties in electrochemical capacitors were tested by cyclic voltammetry (CV) and galvanostatic charge/discharge methods in a three-electrode cell. Activation temperature and time were proved to be key parameters in controling the development of porosity and surface area of the ACs. The ACs have an excellent electro-chemical performance with fast charge/discharge characteristics. AC activated at 1173 K for 2 h exhibits an excellent electrochemical per-formance even at a high scanning rate of 400 mV·s-1 with a quasi-rectangular CV curve and its specific capacitance is up to 126 F·g-1 at a high current density of 4 A·g-1 .

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