Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 18, Issue 1, Pages 433-437Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2011.11.109
Keywords
EDLC; Micro-spherical activated carbon; Mesa-pores
Funding
- Dankook university
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The effects of transition metallic oxide catalysts on the formation of meso-porous structures in microspherical activated carbon were investigated to improve the material's performance as electrodes in EDLCs. Manganese, nickel and cobalt oxides were used as catalysts. Cobalt oxide strongly aided the formation of meso-porous structures. Despite having similar properties to cobalt, nickel and manganese were unable to achieve comparable meso-porous structures. Increased concentrations of cobalt oxide suppressed the formation of micro-pores and reduced the specific surface area. Pores of radii 25-60 angstrom were promoted and the volume of meso-pores increased. EDLCs employing activated carbon electrodes with meso-porous structures showed little reduction of electrostatic capacitance due to the mesa-porous structures but exhibited improved charge transfer resistance and recharge capability. (C) 2011 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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