Article ID Journal Published Year Pages File Type
1517455 Journal of Physics and Chemistry of Solids 2010 5 Pages PDF
Abstract

Activated phenol resin-based carbon spheres (APCS) electrodes with high double layer capacitance and good rate capability were prepared from phenol resin-based spheres (PS) at different carbonization temperatures prior to KOH activation. The carbonization temperature has a marked effect on both the pore structure and the electrochemical performances of the APCS in 6 M KOH electrolyte. APCS carbonized at 600 °C results in higher specific surface area and larger pore size, and hence higher capacitance and better rate capability. The specific capacitance of the APCS in 6 M KOH aqueous solution can be as high as 282 F g−1. It remains 252 F g−1 as the current density increases to 1000 mA g−1.

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Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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