Paper Title:
Activated Carbon from Bituminous Coal by Microwave-Assisted Heating in Different Gas Media for Supercapacitor Electrodes
  Abstract

Activated carbons (ACs) were prepared by microwave−assisted heating of bituminous coal with KOH as activation agent in different gas media for supercapacitors. The pore structure parameters of ACs are obtained by using nitrogen adsorption technique. ACs prepared in static nitrogen, flowing nitrogen and carbon dioxide are denoted as ACStatic-N2, ACFlowing-N2, ACFlowing-CO2. The specific surface area of ACFlowing-N2 is the biggest among the three ACs, which reaches 1201 m2g-1 with total pore volume being at 0.64 cm3 g-1. The specific capacitance of ACFlowing-N2 electrode and energy density of ACFlowing-N2 capacitor is the biggest among the three AC samples with specific capacitance being at 302.6 F g-1 and energy density being at 10.1 Wh kg-1 after 400 cycles. The microwave−assisted KOH activation of coal is an efficient approach to the preparation of ACs for supercapacitors.

  Info
Periodical
Advanced Materials Research (Volumes 148-149)
Edited by
Xianghua Liu, Zhengyi Jiang and Jingtao Han
Pages
1230-1234
DOI
10.4028/www.scientific.net/AMR.148-149.1230
Citation
X. J. He, T. Wang, R. C. Li, M. D. Zheng, X. Y. Zhang, "Activated Carbon from Bituminous Coal by Microwave-Assisted Heating in Different Gas Media for Supercapacitor Electrodes", Advanced Materials Research, Vols. 148-149, pp. 1230-1234, 2011
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Jun He, Ru Chun Li, Ming Dong Zheng, Ting Wang, Xiao Yong Zhang
Abstract:Activated carbons (ACs) from petroleum coke by microwave heating KOH activation are treated by microwave to investigate the effect of...
2151
Authors: Bao Lin Xing, Chuan Xiang Zhang, Lun Jian Chen, Guang Xu Huang
Abstract:Activated carbons (ACs) were prepared from lignite by microwave (MW) and electrical furnace (EF) heating with KOH as activation agent. In...
2472
Authors: Bao Lin Xing, Lun Jian Chen, Chuan Xiang Zhang, Hui Guo
Abstract:Activated carbons (ACs) were prepared from lignite by microwave heating with KOH as activation agent, the effects of the weight ratio of KOH...
1061
Authors: Farinaa Md Jamil, Mohd Ali Sulaiman, Suhaina Mohd Ibrahim, Abdul Kadir Masrom, Muhd Zu Azhan Yahya
Chapter 1: Materials and Technologies for Energy Production
Abstract:A series of mesoporous carbon sample had been synthesized by using a modification of template silica, SBA-15. Sucrose was added into a large...
3