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：Tong, Zhongqiu;童仲秋

通信作者：Li, Y[1]

机构：[1]Guizhou Inst Technol, Coll Mat & Met Engn, Guiyang 550003, Peoples R China;[2]Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China;[3]Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Peoples R China;[4]Guizhou Inst Technol, Coll Sci, Guiyang 550003, Peoples R China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：corresponding author), Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China.

年份：2016

卷号：69

起止页码：46-49

外文期刊名：ELECTROCHEMISTRY COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000383445400011)】；

基金：We thank National Natural Science Foundation of China (Nos. 51572058, 91216123, 51174063, 51502057).

语种：英文

外文关键词：Three-dimensionally ordered macroporous structure; Pseudocapacitive effect; Li-ion diffusion coefficient; High rate capability; Vanadium oxide

摘要：In order to act as extrinsic pseudocapacitor materials, nanoscale vanadiumoxides 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. (C) 2016 Elsevier B.V. All rights reserved.