Ordered mesoporous silicon carbide-derived carbon for high-power supercapacitors |
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| Institution: | 1. Université Paul Sabatier, CIRIMAT UMR CNRS 5085, 118 route de Narbonne, 31062 Toulouse, France;2. Réseau sur le Stockage Electrochimique de l''Energie (RS2E), FR CNRS 3459, France;3. Institut Charles Gerhardt Montpellier, UMR 5235 CNRS, Université Montpellier 2, cc1502, 34095 Montpellier cedex 05, France;4. Department of Materials Science and Engineering & A.J. Drexel Nanotechnology Institute, Drexel University, 3141 Chestnut St., Philadelphia, PA 19104, United States |
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| Abstract: | Micro/mesoporous carbon was prepared by chlorination of ordered mesoporous silicon carbide derived from magnesio-thermal reduction of templated carbon-silica precursors. These materials were then used as active materials for electrochemical capacitors and characterized in 1.5 M NEt4BF4/AN. The electrodes showed outstanding rate capability (90% of capacity retention at 1 V/s and time constant of 1 s) with high specific areal capacitance (0.5 F/cm2 of electrode), that makes such hierarchical porous carbons promising for high power and energy density supercapacitors. |
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