Journal
ELECTROCHIMICA ACTA
Volume 54, Issue 8, Pages 2185-2189Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2008.10.032
Keywords
Porous carbon; Carbonization; Electric double layer capacitor; Volumetric capacitance; Rate performance
Categories
Funding
- National Science Foundation of China [50802112, 20633040]
- National Key Basic Research and Development Program [2009CB220100]
- National High Technology Research and Development Program [2006AA11A165]
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Porous carbons with high-volumetric capacitance in aqueous electric double layer capacitors (EDLCs) were simply prepared by poly(vinylidene chloride) (PVDC) carbonization at high temperature without activation or any other additional processes. The PVDC-derived carbon is inicroporous with Brunauer-Emmett-Teller (BET) surface area about 1200 m(2) g(-1). As it possesses not only high-gravimetric capacitance (262 Fg(-1)) but also high-electrode density (0.815gcm(-3)), the PVDC-derived carbon present an outstanding high-volumetric capacitance of 214 Fcm(-3). twice over of the commercial carbon Maxsorb-3 with a high-surface area of 3200 m(2) g(-1). The PVDC-derived carbon also exhibit good rate performance, indicating that it is a promising electrode material for EDLCs. (C) 2008 Elsevier Ltd. All rights reserved.
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