Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1517455 | Journal of Physics and Chemistry of Solids | 2010 | 5 Pages |
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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Authors
Xuan Du, Cheng-Yang Wang, Ming-Ming Chen, Shuo Zhao, Jin Wang,