Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1558303 | New Carbon Materials | 2013 | 4 Pages |
Abstract
A simple method was proposed to prepare a high surface area and hierarchical porous carbon for supercapacitors by one step carbonization-activation of poly(vinylidene chloride) with NaOH. The porous carbon has hierarchical micropores, mesopores and macropores with a high surface area of 2 815 m2·gâ1. Its capacitance reaches 376 and 215 F·gâ1 at current densities of 0.05 and 50 A·gâ1 respectively in 6 mol·Lâ1 KOH aqueous electrolyte. The capacitance is 170 and 124 F·gâ1 at 0.05 and 20 A·gâ1, respectively in 1 mol·Lâ1 Et4NBF4/AN non-aqueous electrolyte. The high capacitance and its high retention ratios at high current density in both electrolytes could be ascribed to its hierarchically porous structure and high surface area.
Related Topics
Physical Sciences and Engineering
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Materials Chemistry
Authors
Dong-fang ZHENG, Meng-qiu JIA, Bin XU, Hao ZHANG, Gao-ping CAO, Yu-sheng YANG,