KOH-activated nitrogen doped porous carbon nanowires with superior performance in supercapacitors

doi:10.1016/j.electacta.2016.01.038

	KOH-activated nitrogen doped porous carbon nanowires with superior performance in supercapacitors
	Wang, Bin 2; Qiu, Jianhui 2,3; Feng, Huixia 1; Sakai, Eiichi 2; Komiyama, Takao 2
刊名	Electrochimica Acta
	2016-02-01
卷号	190 页码:229-239
关键词	Capacitance Carbon Carbonization Chemical activation Electrodes Nanowires Nitrogen Polypyrroles Porous materials Potassium hydroxide Supercapacitor System stability Carbon nanowire Direct carbonizations Electrochemical performance KOH activation Nitrogen-doped Nitrogen-doped carbons Three electrode-system Two-electrode systems
ISSN号	00134686
DOI	10.1016/j.electacta.2016.01.038
英文摘要	Nitrogen-doped porous carbon nanowires were prepared by KOH activation of nitrogen doped carbon nanowires derived from direct carbonization of polypyrrole nanowires. The porous structure and nitrogen content were closely related to the mass ratio of KOH and carbon nanowires. The resultant nanowires demonstrated the highest specific surface area (1642 m2 g-1) and capacitance (291 F g-1 at the current density of 1 A g-1 in three-electrode systems), when the mass ratio of KOH and nitrogen doped carbon nanowires reached 2. It also exhibited the excellent high rate performance and good cycle stability (94.8% capacitance retention after 5000 cycles) in three-electrode systems. High energy density (21.9 Wh kg-1 at a current density of 0.4 A g-1 in 0-1.6 V) and good cycle stability (the capacitance retention of 98.1% over 5000 cycles) were shown in symmetric two-electrode systems. These excellent electrochemical performances could be attributed to the high surface area, unique micro/meso/macroporous structure, and optimized nitrogen content. © 2016 Elsevier Ltd. All rights reserved.
WOS研究方向	Electrochemistry
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000371141500028
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150197]
专题	教务处（创新创业学院）
作者单位	1.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Department of Machine Intelligence and Systems Engineering, Faculty of Systems Engineering, Akita Prefectural University, Akita; 015-0055, Japan; 3.College of Aerospace Engineering, Chongqing University, Shazheng Road, Shapingba District, Chongqing; 400030, China
推荐引用方式 GB/T 7714	Wang, Bin,Qiu, Jianhui,Feng, Huixia,et al. KOH-activated nitrogen doped porous carbon nanowires with superior performance in supercapacitors[J]. Electrochimica Acta,2016,190:229-239.
APA	Wang, Bin,Qiu, Jianhui,Feng, Huixia,Sakai, Eiichi,&Komiyama, Takao.(2016).KOH-activated nitrogen doped porous carbon nanowires with superior performance in supercapacitors.Electrochimica Acta,190,229-239.
MLA	Wang, Bin,et al."KOH-activated nitrogen doped porous carbon nanowires with superior performance in supercapacitors".Electrochimica Acta 190(2016):229-239.