Supercapacitor electrodes of carbon derived from waste materials

Rufford, Thomas, Jurcakova, Denisa, Cheng, Ching-Yuan, Zhu, Zhonghua and Lu, Gaoqing (2009). Supercapacitor electrodes of carbon derived from waste materials. In: International Green Energy NanoCarbon Conference 2009, Jeonju, South Korea, (). 3-6 November, 2009.

Author Rufford, Thomas
Jurcakova, Denisa
Cheng, Ching-Yuan
Zhu, Zhonghua
Lu, Gaoqing
Title of paper Supercapacitor electrodes of carbon derived from waste materials
Conference name International Green Energy NanoCarbon Conference 2009
Conference location Jeonju, South Korea
Conference dates 3-6 November, 2009
Publication Year 2009
Sub-type Oral presentation
Abstract/Summary Waste biomasses from food and agricultural processes were used as precursors for activated carbon electrodes in supercapacitors. The activated carbons were prepared from materials including waste coffee beans, sawdust, sugar cane bagasse, tofu waste and popcorn using ZnCl2. Electrochemical characterizations by cyclic voltammetry, galvanic cycling and electrochemical impedance were performed in sandwich type supercapacitor cells in both aqueous (1 M H2SO4) and organic electrolytes (1 M tetraethyl ammonium tetrafluoroborate/acetonitrile). Carbon electrodes from coffee beans displayed the highest specific capacitance in both electrolytes. ZnCl2 to carbon precursor ratio had a large effect on supercapacitor electrode performance as higher ZnCl2 ratios developed mesopores in the carbon and these mesopores facilitated better capacitance at fast charge-discharge rates.
Subjects 030604 Electrochemistry
660303 Energy storage
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status Unknown
Additional Notes Invited presentation by Professor Zhonghua ZHU

Document type: Conference Paper
Collection: School of Chemical Engineering Publications
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Created: Wed, 11 Nov 2009, 13:59:11 EST by Dr Thomas Rufford on behalf of School of Chemical Engineering