Ultra-small vanadium nitride quantum dots embedded in porous carbon as high performance electrode materials for capacitive energy storage

doi:10.1016/j.jpowsour.2016.09.151

	Ultra-small vanadium nitride quantum dots embedded in porous carbon as high performance electrode materials for capacitive energy storage
	Yang, Yunlong 1; Zhao, Lei 2; Shen, Kuiwen 1; Liu, Ying 1; Zhao, Xiaoning 1; Wu, Yage 1; Wang, Yanqin 1; Ran, Fen1
	2016-11-30
发表期刊	Journal of Power Sources
ISSN	03787753
卷号	333 页码:61-71
摘要	Ultra-small vanadium nitride quantum dots embedded in porous carbon (VNQDs/PC) were fabricated by a thermal treatment process of NH4VO3/C3H6N6 under nitrogen atmosphere. The specific capacitance of VNQDs/PC was 1008 mF cm−2 at a current density of 0.004 A cm−2, whereas the VN/carbon hybrid material obtained by a solid-state blending of NH4VO3 and C3H6N6 just exhibited a capacitance of 432 mF cm−2 at the same current density. By mediating the ratio of NH4VO3 and C3H6N6, a maximum specific capacitance of 1124 mF cm−2 was achieved at a current density of 0.002 A cm−2 in aqueous 6 mol/L KOH electrolyte with the potential range from 0 to −1.15 V when it reached 1: 7 (wt./wt.). Additionally, symmetrical supercapacitor fabricated with synthesized VNQDs/PC presented a high specific capacitance of 215 mF cm−2 at 0.002 A cm−2 based on the entire cell, and exhibited a high capacitance retention of 86.6% with current density increased to 5 A g−1. The VNQDs/PC negative electrodes were combined with Ni(OH)2 positive electrodes for the fabrication of hybrid supercapacitors. Remarkably, at a power density of 828.7 W kg−1, the device delivered an ultrahigh energy density of 47.2 Wh kg−1. © 2016 Elsevier B.V.
关键词	Blending Capacitance Carbon Current density Electrodes Electrolytes Hybrid materials Nanocrystals Nickel compounds Nitrides Porous materials Potassium hydroxide Semiconductor quantum dots Supercapacitor Capacitance retention High specific capacitances Hybrid supercapacitors Nitrogen atmospheres Specific capacitance Thermal treatment process Ultra-high energies Vanadium nitrides
DOI	10.1016/j.jpowsour.2016.09.151
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000386403700009
出版者	Elsevier B.V.
EI入藏号	20164002873781
EI主题词	Vanadium compounds
EI分类号	701.1 Electricity: Basic Concepts and Phenomena - 714.2 Semiconductor Devices and Integrated Circuits - 761 Nanotechnology - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 951 Materials Science
来源库	Compendex
分类代码	701.1 Electricity: Basic Concepts and Phenomena - 714.2 Semiconductor Devices and Integrated Circuits - 761 Nanotechnology - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 951 Materials Science
引用统计	被引频次：69[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/113028
专题	材料科学与工程学院
通讯作者	Ran, Fen
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Longdong Univ, Coll Mech Engn, Qingyang 745000, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Yang, Yunlong,Zhao, Lei,Shen, Kuiwen,et al. Ultra-small vanadium nitride quantum dots embedded in porous carbon as high performance electrode materials for capacitive energy storage[J]. Journal of Power Sources,2016,333:61-71.
APA	Yang, Yunlong.,Zhao, Lei.,Shen, Kuiwen.,Liu, Ying.,Zhao, Xiaoning.,...&Ran, Fen.(2016).Ultra-small vanadium nitride quantum dots embedded in porous carbon as high performance electrode materials for capacitive energy storage.Journal of Power Sources,333,61-71.
MLA	Yang, Yunlong,et al."Ultra-small vanadium nitride quantum dots embedded in porous carbon as high performance electrode materials for capacitive energy storage".Journal of Power Sources 333(2016):61-71.