Influence of the Concentration of Electrolyte on the Capacitive Properties of Vanadium Nitride Electrode for Electrochemical Capacitors

doi:10.1149/2.0461802jes

	Influence of the Concentration of Electrolyte on the Capacitive Properties of Vanadium Nitride Electrode for Electrochemical Capacitors
	Liu, Hong-hui 1,2,3; Zhang, Hong-ling 2,3; Xu, Hong-bin 2,3; Lou, Tai-ping 1; Sui, Zhi-tong 1; Zhang, Yi 1,2,3
刊名	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
	2018
卷号	165 期号:2 页码:A97-A103
ISSN号	0013-4651
DOI	10.1149/2.0461802jes
英文摘要	Cyclic voltammetry and electrochemical impedance spectroscopy were applied to investigate the effect of the concentration of KOH solution on the capacitive performance of the nanostructured vanadium nitride. The results reveal that the required overpotential for the transformation of V2+ to V3+ in concentrated KOH solutions is much lower than that in diluted solutions, indicating that concentrated solutions are kinetically more favorable than diluted solutions. Additionally, a marked decrease in charge transfer resistance and electrolyte series resistance were observed as the concentration of KOH solution increased. Thus, the specific capacitance and the rate capability of the vanadium nitride electrode are improved with increasing of the concentration of KOH solution. Moreover, the specific capacitance of the vanadium nitride material in 6 M KOH solution is the highest, and the vanadium nitride material exhibits great long term stability in KOH solution. (C) 2018 The Electrochemical Society.
资助项目	China National Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07402003]
WOS关键词	CHARGE STORAGE ; ENERGY-STORAGE ; TIO2 ANATASE ; THIN-FILMS ; SUPERCAPACITORS ; PERFORMANCE ; SURFACE ; PSEUDOCAPACITANCE ; BEHAVIOR ; OXIDE
WOS研究方向	Electrochemistry ; Materials Science
语种	英语
出版者	ELECTROCHEMICAL SOC INC
WOS记录号	WOS:000431786800013
资助机构	China National Major Science and Technology Program for Water Pollution Control and Treatment
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/24611]
专题	中国科学院过程工程研究所
通讯作者	Zhang, Hong-ling
作者单位	1.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydrometall Cleaner Prod Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Liu, Hong-hui,Zhang, Hong-ling,Xu, Hong-bin,et al. Influence of the Concentration of Electrolyte on the Capacitive Properties of Vanadium Nitride Electrode for Electrochemical Capacitors[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2018,165(2):A97-A103.
APA	Liu, Hong-hui,Zhang, Hong-ling,Xu, Hong-bin,Lou, Tai-ping,Sui, Zhi-tong,&Zhang, Yi.(2018).Influence of the Concentration of Electrolyte on the Capacitive Properties of Vanadium Nitride Electrode for Electrochemical Capacitors.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,165(2),A97-A103.
MLA	Liu, Hong-hui,et al."Influence of the Concentration of Electrolyte on the Capacitive Properties of Vanadium Nitride Electrode for Electrochemical Capacitors".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 165.2(2018):A97-A103.