期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 43, 期 3, 页码 1596-1605出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.11.091
关键词
Sulfur-doped; Porous carbon; Supercapacitor; Energy storage
资金
- National Natural Science Foundation of China [U1401246]
- National Natural Science Foundation of Guangdong Province [U1401246]
- Science and Technology Program of Guangdong Province of China [2017B050504004, 2014B010106005, 2015B010135011, 2015A050502047]
- Science and Technology Program of Guangzhou City of China [2016201604030040]
In this work, three-dimensional (3D) interconnected S-doped porous carbon materials are fabricated using bio-waste sodium lignosulfonate as carbon and sulfur precursor by in situ carbonization and subsequent KOH activation process. The as-obtained S-PC-SO has high specific surface area of 1592 m(2) g(-1), high S weight percentage up to 5.2 wt% and interconnected porous framework consisting of micro-, meso- and macropores. As a result, the S-PC-50 exhibits a high specific capacitance of 320 F g(-1) at 0.2 A g(-1), excellent rate performance with 76.5% capacitance retention after a current density increasing from 2 A ra (200 F g(-1)) to 100 A g(-1). (153 F ri) and 99% capacitance retention after 10,000 cycles at 5 A g(-1). Besides, the symmetric supercapacitor can deliver a high energy density up to 8.2 Wh kg(-1) at 50 W kg(-1). (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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