期刊
JOURNAL OF POWER SOURCES
卷 351, 期 -, 页码 130-137出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2017.03.036
关键词
Porous; Phosphorus doped carbon; Lignocellulose; Supercapacitors
资金
- National Foundation of China [31530009, 31500476, 21403306]
- Guangdong Natural Science Foundation for Distinguished Young Scholar [2014A030306048]
- Hunan Provincial Natural Science Foundation [2015JJ2203]
- Research Foundation of Education Bureau of Hunan Province [15K51]
- Hunan Provincial Technicial Innovation Platform and Talent Program in Science and Technology [2016RS2010, 2016TP1013]
- Young Elite Scientists Sponsorship Program by CAST (YESS Program)
- Science and Technology Planning Project of Guangdong Province [2015B090927007]
Engineering porous heteroatom-doped carbon nanomaterials with remarkable capacitive performance is highly attractive. Herein, a simple and smart method has been developed to synthesize phosphorus (P) doped carbon with hierarchical porous structure derived from lignocellulose. Hierarchically porous P doped carbon is readily obtained by the pyrolysis of lignocellulose immersed in ZnC1(2)/NaH2PO4 aqueous solution, and exhibits excellent capacitive properties. The as-obtained P doped porous carbon delivers a significant capacitance of 133 F g(-1) (146 mF cm(-2)) at a high current density of 10 A g(-1) with outstanding rate performance. Furthermore, the P doped carbon electrode yields a long-term cycling durability with more than 97.9% capacitance retention after 10000 cycles as well. A symmetric supercapacitor with a maximum energy density of 4.7 Wh kg(-1) is also demonstrated based on these P doped carbon electrodes. (C) 2017 Elsevier B.V. All rights reserved.
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