Effect of Microwave-Treatment Power on the Properties of Activated Carbons as Electrode Materials for Supercapacitors

Abstract:

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Activated carbons (ACs) from petroleum coke by microwave heating KOH activation are treated by microwave to investigate the effect of microwave−treatment power on AC properties. The electrochemical properties of AC electrodes for supercapacitors were investigated by cyclic voltammetry, constant current charge−discharge and electrochemical impedance spectroscopy. The results showed that specific surface area (SBET) and total pore volume of microwave−treated ACs, specific capacitance and energy density of microwave−treated AC electrodes decreased. The electrical conductivity and stability of AC electrodes for supercapacitors were improved. Fast microwave−treatment is an efficient method to obtain suitable ACs for supercapacitors.

Info:

Periodical:

Advanced Materials Research (Volumes 194-196)

Edited by:

Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang

Pages:

2151-2155

DOI:

10.4028/www.scientific.net/AMR.194-196.2151

Citation:

X. J. He et al., "Effect of Microwave-Treatment Power on the Properties of Activated Carbons as Electrode Materials for Supercapacitors", Advanced Materials Research, Vols. 194-196, pp. 2151-2155, 2011

Online since:

February 2011

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Price:

$35.00

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