A comparative study of chemical treatment by FeC1 3, MgC12, and ZnCl_2 on microstructure, surface chemistry, and double-layer capacitance of carbons from waste biomass

Thomas E. Rufford; Denisa Hulicova-Jurcakova; Zhonghua ZhuGao Qing Lu

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A comparative study of chemical treatment by FeC1 3, MgC12, and ZnCl_2 on microstructure, surface chemistry, and double-layer capacitance of carbons from waste biomass

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The effect of chemical treatment on the capacitance of carbon electrodes prepared fromwaste coffee grounds was investigated. Coffee grounds were impregnated with FeCand l_3MgCl_2 and then treated at 900 °C. The resultant carbons were compared with activatedcoffee ground carbons prepared by ZnCl_ 2 treatment. The carbon treatment processes ofFeCl_3 and MgCl_2 were studied using thermal gravimetric analysis, Raman spectroscopy,x-ray photoelectron spectroscopy, and N_2 and CO_2 adsorption were used to characterizethe activated carbons. Activation with ZnCl_2 and FeCl_3 produced carbons with highersurface areas (977 and 846 m 2/g, respectively) than treatment with MgCl_ 2(123 m~2/g).Electrochemical double-layer capacitances of the carbons were evaluated in 1 M H_2SO_4using two-electrode cells. The system with FeCl_3-treated carbon electrodes provided aspecific cell capacitance of 57 F/g.

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来源
《Journal of Materials Research》 |2010年第8期|1451-1459|共9页
作者
Thomas E. Rufford; Denisa Hulicova-Jurcakova; Zhonghua ZhuGao Qing Lu;
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作者单位

School of Chemical Engineering, The University of Queensland, St. Lucia 4072, Australia;

ARC Centre of Excellence for Functional Nanomaterials, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia 4072, Australia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
comparative; chemical; biomass;

A comparative study of chemical treatment by FeC1 3, MgC12, and ZnCl_2 on microstructure, surface chemistry, and double-layer capacitance of carbons from waste biomass

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