个人信息Personal Information
副教授
硕士生导师
性别:男
毕业院校:武汉大学
学位:博士
所在单位:化学学院
学科:无机化学. 材料物理与化学
办公地点:化学楼431
联系方式:13654946624
电子邮箱:yfzhang@dlut.edu.cn
PVP-assisted hydrothermal synthesis of VO(OH)(2) nanorods for supercapacitor electrode with excellent pseudocapacitance
点击次数:
论文类型:期刊论文
发表时间:2018-09-15
发表刊物:MATERIALS LETTERS
收录刊物:SCIE
卷号:227
页面范围:217-220
ISSN号:0167-577X
关键字:VO(OH)(2); Microstructure; Nanorods; Electrical properties; Energy storage and conversion
摘要:Vanadium oxyhydroxide VO(OH)(2), which may possess specific chemical and physical properties, has been paid less attention comparing with vanadium oxides. Herein, with the assistance of polyvinyl pyrrolidone (PVP) and by adjusting pH about 4.7, VO(OH)(2) was successfully synthesized by a facile hydrothermal method for the first time, which were short nanorods with widths of 50-130 nm and lengths of 250-500 nm. Electrochemical performance of VO(OH)(2) nanorods was firstly investigated as supercapacitor electrodes, which were studied by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS). VO(OH)(2) nanorods showed capacitive behavior based on pseudocapacitance and superior rate capability. Specific capacitance of 198 F.g (1) was achieved at 0.5 A.g (1). These findings suggested that VO(OH)(2) nanorods can be promising candidate as potential material for supercapacitor electrode. (C) 2018 Elsevier B.V. All rights reserved.
上一条:Synthesis and characterization of Mn-Silicalite-1 by the hydrothermal conversion of Mn-magadiite under the neutral condition and its catalytic performance on selective oxidation of styrene
下一条:High pH promoting the synthesis of V-Silicalite-1 with high vanadium content in the framework and its catalytic performance in selective oxidation of styrene