Abstract
Mesoporous carbon for supercapacitors was prepared from sucrose using nano-CaCO3 as template.The microstructure of the carbon was characterized with N2 adsorption and transmission electron microscopy(TEM) observation.The electrochemical performances were evaluated in 6mol·L-1 KOH aqueous electrolyte with galvanostatic charge/discharge,cyclic voltammetry,and ac impedance spectroscopy.The sucrose-based mesoporous carbon had a surface area of 606 m2/g and enriched mesopores in the range of 10～30 nm.The mesoporous carbon presented a specific capacitance of 125 F/g at a current density of 50 mA/g and outstanding excellent rate performance.As the current density increased to 20 000 mA/g,its capacitance remained at 88 F/g,much higher than the commercial capacitive carbon,indicating that the mesoporous carbon is a promising electrode material for high power supercapacitors.
Keywords
supercapacitor, mesoporous carbon, rate performance
Publication Date
2009-02-28
Online Available Date
2009-02-28
Revised Date
2009-02-28
Received Date
2009-02-28
Recommended Citation
Bin XU, Lu PENG, Guo-qing WANG, Gao-ping CAO, Feng WU, Yu-sheng YANG.
Mesoporous Carbon for High Power Supercapacitors[J]. Journal of Electrochemistry,
2009
,
15(1): 9-12.
DOI: 10.61558/2993-074X.1944
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol15/iss1/3
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons, Power and Energy Commons
