电化学电容器氮化钒负极材料性能研究

CORC > 厦门大学 > 2013年第19卷

	电化学电容器氮化钒负极材料性能研究; Performance of VN as Negative Electrode Materials in Electrochemical Capacitors
	高兆辉 ; 张浩 ; 曹高萍 ; 韩敏芳 ; 杨裕生 ; GAO Zhao-hui ; ZHANG Hao ; CAO Gao-ping ; HAN Min-fang ; YANG Yu-sheng
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9953.shtml
	2013-04-28
关键词	电化学电容器氮化钒纳米晶负极材料比表面积比电容 electrochemical capacitor nanocrystalline vanadium nitride negative electrode materials specific surface area specific capacitance
英文摘要	利用高温氨解还原氧化钒（V2O5）制备了氮化钒（VN）纳米材料. 采用XRD、SEM与TEM观察分析样品的结构和形貌，采用氮气吸附、循环伏安曲线以及恒流充放电曲线测试样品的比表面积、孔径分布和电极电化学性能. 结果表明，VN样品属于立方晶系（Fm3m [225]），其大小均一，近似球形，氨解时间的加长（12 h），小颗粒间相互交联可形成一定的介孔. 50 mA?g-1电流密度下VN-c电极的比电容能达到192 F.g-1，1000周期循环其比电容仍有150 F.g-1，同时具有双电层电容性能和氧化还原反应的准电容性能.; Nanocrystalline vanadium nitride (VN) materials were synthesized by high temperature ammonia (NH3) reduction of vanadium oxide (V2O5). The structure and morphology of VN materials were characterized by XRD，SEM and TEM, while the specific surface area, pore size distribution and supercapacitive behavior by N2 absorption, cyclic voltammetry (CV) and constant current charge-discharge measurements in 1 mol?L-1 KOH electrolyte. The results showed that the VN sample belonged to the cubic crystal system (Fm3m [225])，and had homogeneous surface and appeared nearly spherical with uniform size. As the reaction time was extended to 12 h，small particles were interconnected with each other to form some mesopores. The specific capacitance of VN-c was 192 F.g-1 at current density of 50 mA.g-1，and retained 150 F.g-1 after 1000 cycles. The VN sample possessed both capacitive properties of electrical double-layer and pseudocapacitive properties of redox reactions.; 国家自然科学基金项目(No.50902149)资助; 作者联系地址：1. 中国矿业大学（北京）化学与环境工程学院，北京 100083；2. 中国人民解放军防化研究院，北京 100191; Author's Address: 1. College of Chemical and Environmental Engineering，China University of Mining and Technology，Beijing 100083，China; 2. Research Institute of Chemical Defense，Beijing 100191，China; 通讯作者E-mail：dr.h.zhang@hotmail.com
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/58576]
专题	2013年第19卷
推荐引用方式 GB/T 7714	高兆辉,张浩,曹高萍,等. 电化学电容器氮化钒负极材料性能研究, Performance of VN as Negative Electrode Materials in Electrochemical Capacitors[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9953.shtml,2013.
APA	高兆辉.,张浩.,曹高萍.,韩敏芳.,杨裕生.,...&YANG Yu-sheng.(2013).电化学电容器氮化钒负极材料性能研究.http://electrochem.xmu.edu.cn/CN/abstract/abstract9953.shtml.
MLA	高兆辉,et al."电化学电容器氮化钒负极材料性能研究".http://electrochem.xmu.edu.cn/CN/abstract/abstract9953.shtml (2013).