Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7729625 | Journal of Power Sources | 2016 | 9 Pages |
Abstract
A facile and one-step method is demonstrated to prepare carbon nanofibers (CNFs)-bridged porous carbon nanosheets (PCNs) through carbonization of the mixture of bacterial cellulose and potassium citrate. The CNFs bridge PCNs to form integrated porous carbon architecture with high specific surface area of 1037Â m2Â gâ1, much higher than those of pure PCNs (381Â m2Â gâ1) and CNFs (510Â m2Â gâ1). As a consequence, the PCN/CNF composite displays high specific capacitance of 261Â FÂ gâ1, excellent rate capability and outstanding cycling stability (97.6% of capacitance retention after 10000 cycles). Moreover, the assembled symmetric supercapacitor with PCN/CNF electrodes delivers an ultrahigh energy density of 20.4Â Wh kgâ1 and outstanding cycling life (94.8% capacitance retention after 10000 cycles) in an aqueous electrolyte.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Yuting Jiang, Jun Yan, Xiaoliang Wu, Dandan Shan, Qihang Zhou, Lili Jiang, Deren Yang, Zhuangjun Fan,