SUN Li, WANG Chun-lei, ZHOU Ying, ZHANG Xu, QIU Jie-shan. Activated carbons produced from depleted fullerene soot by carbon dioxide activation and their electrochemical properties. New Carbon Mater., 2014, 29(1): 55-60.
Citation:
SUN Li, WANG Chun-lei, ZHOU Ying, ZHANG Xu, QIU Jie-shan. Activated carbons produced from depleted fullerene soot by carbon dioxide activation and their electrochemical properties. New Carbon Mater., 2014, 29(1): 55-60.
SUN Li, WANG Chun-lei, ZHOU Ying, ZHANG Xu, QIU Jie-shan. Activated carbons produced from depleted fullerene soot by carbon dioxide activation and their electrochemical properties. New Carbon Mater., 2014, 29(1): 55-60.
Citation:
SUN Li, WANG Chun-lei, ZHOU Ying, ZHANG Xu, QIU Jie-shan. Activated carbons produced from depleted fullerene soot by carbon dioxide activation and their electrochemical properties. New Carbon Mater., 2014, 29(1): 55-60.
Carbon Research Laboratory, Liaoning Key Lab. for Energy Materials and Chemical Engineering, State Key Lab of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
Funds:
National Natural Science Foundation of China (20836002, 21003016, 21276045); China Postdoctoral Science Foundation ( 20100481227).
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 electrochemical performance with fast charge/discharge characteristics. AC activated at 1173K for 2h exhibits an excellent electrochemical performance even at a high scanning rate of 400mV·s-1 with a quasi-rectangular CV curve and its specific capacitance is up to 126F·g-1 at a high current density of 4A·g-1.