Abstract
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 microporous with Brunauer-Emmett-Teller (BET) surface area about 1200 m2 g-1. As it possesses not only high-gravimetric capacitance (262 F g-1) but also high-electrode density (0.815 g cm-3), the PVDC-derived carbon present an outstanding high-volumetric capacitance of 214 F cm-3, twice over of the commercial carbon Maxsorb-3 with a high-surface area of 3200 m2 g-1. The PVDC-derived carbon also exhibit good rate performance, indicating that it is a promising electrode material for EDLCs.
| Original language | English |
|---|---|
| Pages (from-to) | 2185-2189 |
| Number of pages | 5 |
| Journal | Electrochimica Acta |
| Volume | 54 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 1 Mar 2009 |
Keywords
- Carbonization
- Electric double layer capacitor
- Porous carbon
- Rate performance
- Volumetric capacitance
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