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题名: Nitrogen/sulfur co-doping assisted chemical activation for synthesis of hierarchical porous carbon as an efficient electrode material for supercapacitors
作者: Qi, Fulai1, 2;  Xia, Zhangxun1;  Wei, Wei1;  Sun, Hai1;  Wang, Suli1;  Sun, Gongquan1
关键词: Chemical activation ;  Hierarchical ;  Nitrogen/sulfur co-doping ;  High specific Surface area
刊名: ELECTROCHIMICA ACTA
发表日期: 2017-08-20
DOI: 10.1016/j.electacta.2017.05.192
卷: 246, 页:59-67
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: The microstructure of carbon materials in terms of its specific surface area and pore structure by its activation, are the key issues which determine the electrochemical performance of supercapacitors. In this work, we developed a particular chemical activation process assisted by nitrogen/sulfur co-doping for the preparation of hierarchical porous carbon materials with high specific surface area, aiming at improving the energy density of supercapacitors. The as-obtained hierarchical porous carbon materials exhibited both high Brunauer-Emmett-Teller surface area of up to 3652 m(2) g(-1) for more ions adsorption and high porosity (2.61 cm(3) g(-1)) for rapid ion transport. Attributed to the synergistic effects of these two features, the porous carbon displays high gravimetric specific capacitance (324 F g(-1)) in KOH aqueous electrolyte with outstanding rate performance (73.3% capacitance retention at 100 A g(-1)). The symmetrical supercapacitor based on our hierarchical porous carbon displays a maximum specific energy of 9.76 Wh kg(-1) and 94.5% retention over 10000 cycles at 15 A g(-1). This synthesis strategy is facile, low-cost and industrialized, which provide a promising route to prepare the hierarchical porous carbon materials for energy storage and renewable delivery devices. (C) 2017 Elsevier Ltd. All rights reserved.
关键词[WOS]: HIGH-PERFORMANCE SUPERCAPACITORS ;  OXYGEN REDUCTION REACTION ;  DOUBLE-LAYER CAPACITORS ;  METAL-ORGANIC FRAMEWORK ;  HIGH-SURFACE-AREA ;  ELECTROCHEMICAL CAPACITORS ;  ENERGY-STORAGE ;  DOPED GRAPHENE ;  NANOTUBE ELECTRODES ;  EVOLUTION REACTIONS
语种: 英语
WOS记录号: WOS:000406942800008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149850
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cell & Battery, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Qi, Fulai,Xia, Zhangxun,Wei, Wei,et al. Nitrogen/sulfur co-doping assisted chemical activation for synthesis of hierarchical porous carbon as an efficient electrode material for supercapacitors[J]. ELECTROCHIMICA ACTA,2017,246:59-67.
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