文献类型：期刊文献

英文题名：Pseudocapacitive effect and Li+ diffusion coefficient in three-dimensionally ordered macroporous vanadium oxide for energy storage

作者：Tong, Zhongqiu Xu, Hongbo Liu, Guangqun Zhao, Jiupeng Li, Yao

第一作者：童仲秋;Tong, Zhongqiu

通信作者：Li, Yao

机构：[1] College of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [2] Center for Composite Materials and Structure, Harbin Institute of Technology, Harbin, 150001, China; [3] School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin, 150001, China; [4] College of Science, Guizhou Institute of Technology, Guiyang, 550003, China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：Center for Composite Materials and Structure, Harbin Institute of Technology, Harbin, 150001, China

年份：2016

卷号：69

起止页码：46-49

外文期刊名：Electrochemistry Communications

收录：EI(收录号：20162402483744);Scopus(收录号：2-s2.0-84973322059)

语种：英文

外文关键词：Oxide films - Oxides - Cyclic voltammetry - Diffusion - Chronoamperometry - Supercapacitor

摘要：In order to act as extrinsic pseudocapacitor materials, nanoscale vanadium oxides are required to simultaneously exhibit a capacitance-based high power density and an intercalation-based high energy density. We have fabricated a three-dimensionally ordered macroporous (3DOM) structure with a wall thickness of 14 nm that fulfills the above requirements. The 3DOM vanadium oxide film exhibits high rate performance with 355 F g- 1 at 0.5 A g- 1 and 125 F g- 1 at 15 A g- 1. The enhanced pesudocapacitive effect and Li-ion diffusion coefficient based on the 3DOM nanostructure, also contributes to the high rate capability of vanadia, which can be confirmed by cyclic voltammetry and chronoamperometry. ? 2016 Elsevier B.V. All rights reserved.