文献类型：期刊文献

英文题名：Facile and controllable construction of vanadium pentoxide@conducting polymer core/shell nanostructures and their thickness-dependent synergistic energy storage properties

作者：Tong, Zhongqiu Liu, Shikun Li, Xingang Ding, Yanbo Zhao, Jiupeng Li, Yao

第一作者：Tong, Zhongqiu

通信作者：Li, Y[1]

机构：[1]Guizhou Inst Technol, Coll Mat & Met Engn, Guiyang 550003, Guizhou, 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]CSCEC, Guizhou Construct Sci Res & Design Inst Ltd Co, Guiyang 550006, Guizhou, Peoples R China;[5]Shenyang Inst Engn, Sch Renewable Energy, Shenyang 110136, 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), Guizhou Inst Technol, Coll Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院材料与冶金工程学院;贵州理工学院;

年份：2016

卷号：222

起止页码：194-202

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20165203193603);Scopus(收录号：2-s2.0-85007245856);WOS:【SCI-EXPANDED(收录号:WOS:000392566200023)】；

基金：We thank National Natural Science Foundation of China (No. 51572058, 91216123, 51174063, 51502057), the Natural Science Foundation of Heilongjiang Province (E201436), the International Science & Technology Cooperation Program of China (2013DFR10630, 2015DFE52770), Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP 20132302110031), and Scientific Research Fund of Liaoning Provincial Education Department under Grant (No. L2014516).

语种：英文

外文关键词：Metal oxides; conducting polymer; core/shell; thickness-dependent synergy; energy storage

摘要：Thickness-and morphology-controlled vanadium pentoxide/polyaniline (V2O5/PANI) core/shell hybrid nanofibers are fabricated by electropolymerization of PANI on V2O5 nanofibers for enhanced energy storage. By simply adjusting the electrodeposition time, the thickness of the PANI shells can be controlled from 5 nm to 47 nm, and the morphology can be changed from coaxial to branched. The influence of shell thickness on the improved Li-ion storage performance of the V2O5/PANI core/shell nanofibers is systematically investigated, and this enhancement of charge capability and cycling stability strongly varies with the shell thickness. Thickness-dependent synergistic electron transport, Li-ion diffusion distances, and shell mechanical strength mechanisms are also proposed. These results provide meaningful references for developing new functional core/shell materials and high-performance energy storage composite materials. (C) 2016 Published by Elsevier Ltd.