Superior supercapacitors based on nitrogen and sulfur co-doped hierarchical porous carbon: Excellent rate capability and cycle stability

doi:10.1016/j.jpowsour.2017.05.031

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Superior supercapacitors based on nitrogen and sulfur co-doped hierarchical porous carbon: Excellent rate capability and cycle stability
	Zhang, Deyi 1,2,3; Han, Mei 2; Wang, Bing 2; Li, Yubing 2; Lei, Longyan 2; Wang, Kunjie 2; Wang, Yi 2; Zhang, Liang 2; Feng, Huixia 2
刊名	JOURNAL OF POWER SOURCES
	2017-08
卷号	358 页码:112-120
关键词	Supercapacitor Hierarchical porous carbon Heteroatoms doping Rate capability Superior capacitance performance
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2017.05.031
英文摘要	Vastly improving the charge storage capability of supercapacitors without sacrificing their high power density and cycle performance would bring bright application prospect. Herein, we report a nitrogen and sulfur co-doped hierarchical porous carbon (NSHPC) with very superior capacitance performance fabricated by KOH activation of nitrogen and sulfur co-doped ordered mesoporous carbon (NSOMC). A high electrochemical double-layer (EDL) capacitance of 351 F g(-1) was observed for the reported NSHPC electrodes, and the capacitance remains at 288 F g(-1) even under a large current density of 20 A g(-1). Besides the high specific capacitance and outstanding rate capability, symmetrical supercapacitor cell based on the NSHPC electrodes also exhibits an excellent cycling performance with 95.61% capacitance retention after 5000 times charge/discharge cycles. The large surface area caused by KOH activation (2056 m(2) g(-1)) and high utilized surface area owing to the ideal micro/mesopores ratio (2.88), large micropores diameter (1.38 nm) and short opened micropores structure as well as the enhanced surface wettability induced by N and S heteroatoms doping and improved conductivity induced by KOH activation was found to be responsible for the very superior capacitance performance. (C) 2017 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[51462020][201664009] ; Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education Program[KF-13-01] ; Foundation for Innovation Groups of Basic Research in Gansu Province[1606RJIA322] ; Hongliu young teacher cultivate project of Lanzhou University of Technology[Q201112]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000404691700013
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33167]
专题	石油化工学院省部共建有色金属先进加工与再利用国家重点实验室教务处（创新创业学院）
通讯作者	Zhang, Deyi
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China 3.Northwest Normal Univ, Minist Educ, Key Lab Ecoenvironm Related Polymer Mat, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Deyi,Han, Mei,Wang, Bing,et al. Superior supercapacitors based on nitrogen and sulfur co-doped hierarchical porous carbon: Excellent rate capability and cycle stability[J]. JOURNAL OF POWER SOURCES,2017,358:112-120.
APA	Zhang, Deyi.,Han, Mei.,Wang, Bing.,Li, Yubing.,Lei, Longyan.,...&Feng, Huixia.(2017).Superior supercapacitors based on nitrogen and sulfur co-doped hierarchical porous carbon: Excellent rate capability and cycle stability.JOURNAL OF POWER SOURCES,358,112-120.
MLA	Zhang, Deyi,et al."Superior supercapacitors based on nitrogen and sulfur co-doped hierarchical porous carbon: Excellent rate capability and cycle stability".JOURNAL OF POWER SOURCES 358(2017):112-120.