Electrochemical Performances of Copper/Activated Carbon Composites

Authors

Lan-ting LI, School of Chemical and Environmental Engineering,China University of Miningand Technology,Beijing 100083,China;
Qiang XIE, School of Chemical and Environmental Engineering,China University of Miningand Technology,Beijing 100083,China;
Wen YAN, School of Chemical and Environmental Engineering,China University of Miningand Technology,Beijing 100083,China;
Yan-yan WANG, School of Chemical and Environmental Engineering,China University of Miningand Technology,Beijing 100083,China;
Wen-wen XING, School of Chemical and Environmental Engineering,China University of Miningand Technology,Beijing 100083,China;

Abstract

The development and improvement of electrode materials can result in the enhancement of the performances of electrochemical capacitor.In this paper various copper/activated carbon composites were prepared in the presence of different amounts(from 0% to 40%) of copper nitrate from bituminous coal.Then different electrodes were prepared from copper oxide,activated carbon and copper/activated carbon composites,respectively,and were characterized by cyclic voltammetry,alternative current(AC) impedance,charge-discharge at constant current and maintenance of the self-potential.The results showed that the proper amount of copper in copper/activated carbon composites positively influenced the electrochemical performances of electrodes,and the capacitance of copper/activated carbon composites was larger than that of the total of copper oxide and activated carbon.The specific capacitance of composite containing 20% copper reached 67.5 F/g,which is 1.72 times of that of the activated carbon without copper prepared under the same condition.The copper/activated carbons exhibited to better recyclability,higher capacity and lower impedance.However,its maintenance of the self-potential needs to be further investigated and improved.

Keywords

copper nitrate, activated carbon, electrode, electrochemical performance

DOI Link

https://doi.org/10.61558/2993-074X.1879

Publication Date

2008-05-28

Online Available Date

2008-05-28

Revised Date

2008-05-28

Received Date

2008-05-28

Recommended Citation

Lan-ting LI, Qiang XIE, Wen YAN, Yan-yan WANG, Wen-wen XING. Electrochemical Performances of Copper/Activated Carbon Composites[J]. Journal of Electrochemistry, 2008 , 14(2): 140-145.
DOI: 10.61558/2993-074X.1879
Available at: https://jelectrochem.xmu.edu.cn/journal/vol14/iss2/6