Mesoporous Carbon for High Power Supercapacitors

Authors

Bin XU, Research Institute of Chemical Defense,Beijing 100083,China;School of ChemicalEngineering & the Environment,Beijing Institute of Technology,Beijing 100081,China;
Lu PENG, School of ChemicalEngineering & the Environment,Beijing Institute of Technology,Beijing 100081,China;
Guo-qing WANG, School of ChemicalEngineering & the Environment,Beijing Institute of Technology,Beijing 100081,China;
Gao-ping CAO, Research Institute of Chemical Defense,Beijing 100083,China;
Feng WU, School of ChemicalEngineering & the Environment,Beijing Institute of Technology,Beijing 100081,China;
Yu-sheng YANG, Research Institute of Chemical Defense,Beijing 100083,China;

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

DOI Link

https://doi.org/10.61558/2993-074X.1944

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

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