Nanocrystalline Intermetallic Tungsten Carbide: Nanoscaled Solidoid Synthesis, Nonfaradaic Pseudocapacitive Property, and Electrode Material Application

doi:10.1002/admi.201700099

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Nanocrystalline Intermetallic Tungsten Carbide: Nanoscaled Solidoid Synthesis, Nonfaradaic Pseudocapacitive Property, and Electrode Material Application
	Zhang, Wei-Bin 1; Ma, Xue-Jing 1; Kong, Ling-Bin 1,2
刊名	ADVANCED MATERIALS INTERFACES
	2017-07-07
卷号	4 期号:13
关键词	electrode materials intermetallics nonfaradaic pseudocapacitances solidoid synthesis tungsten carbide
ISSN号	2196-7350
DOI	10.1002/admi.201700099
英文摘要	A capacitive electrode material of nanocrystalline intermetallic W2C has been synthesized and studied for electrochemical capacitors. A specific capacitance of 158.2 F g(-1) is found in 1 mol dm(-3) H2SO4 (aq) at a specific current density of 1 A g(-1), and 99.5% of capacitance remains after 5000 cycles of charging-discharging. 88.9% of the initial value remains at a current density of 10 A g(-1). W2C exhibits a high electrochemical capacitance that may be attributed to the electrical conductivity, which can promote the electrochemical performance more observably and ensure a long life cycle and fast electrical charge transfer rate. Based on the specific surface areas and specific capacitances, the sub-surface space nonfaradaic pseudocapacitive mechanism is proposed. In addition, the assembled asymmetrical electrochemical capacitor of W2C//activated carbon shows a high energy density and accompanying power density of 19.2 and 8976.6 W kg(-1), facilitating high duty applications.
资助项目	National Natural Science Foundation of China[51362018] ; Foundation for Innovation Groups of Basic Research in Gansu Province[1606RJIA322]
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000405123200005
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33193]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
通讯作者	Kong, Ling-Bin
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, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Wei-Bin,Ma, Xue-Jing,Kong, Ling-Bin. Nanocrystalline Intermetallic Tungsten Carbide: Nanoscaled Solidoid Synthesis, Nonfaradaic Pseudocapacitive Property, and Electrode Material Application[J]. ADVANCED MATERIALS INTERFACES,2017,4(13).
APA	Zhang, Wei-Bin,Ma, Xue-Jing,&Kong, Ling-Bin.(2017).Nanocrystalline Intermetallic Tungsten Carbide: Nanoscaled Solidoid Synthesis, Nonfaradaic Pseudocapacitive Property, and Electrode Material Application.ADVANCED MATERIALS INTERFACES,4(13).
MLA	Zhang, Wei-Bin,et al."Nanocrystalline Intermetallic Tungsten Carbide: Nanoscaled Solidoid Synthesis, Nonfaradaic Pseudocapacitive Property, and Electrode Material Application".ADVANCED MATERIALS INTERFACES 4.13(2017).