Nanophase Ru-RuO2 composites decorated on wrinkled Nb-doped TiO2 nanofibers for electrochemical capacitors

被引：10
作者：
An, Hye Lan [1 ]
Lee, Yu-Jin [1 ]
Ahn, Hyo-Jin [1 ]
机构：
[1] Seoul Natl Univ Sci & Technol, Dept Mat Sci & Engn, Seoul 139743, South Korea
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2015年 / 41卷 / 07期
基金：
新加坡国家研究基金会;
关键词：
Electrochemical capacitors; Nanophase Ru-RuO2 composites; Nb-doped TiO2 nanofibers; Electrospinning method; Impregnation method; ELECTRODE MATERIALS; HIGH-PERFORMANCE; RUO2; PSEUDOCAPACITANCE; FABRICATION; FILMS; OXIDE; XPS;
D O I：
10.1007/s11164-014-1567-z
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Here, we studied nanophase Ru-RuO2 composites decorated on wrinkled Nb-doped TiO2 (NTO) nanofiber (NF) supports for electrochemical capacitors. These compositions were synthesized by an electrospinning method and an impregnation method. To investigate the electrochemical performance of electrochemical capacitors, 20 wt% nanophase Ru-RuO2 composites were decorated on wrinkled NTO NF supports doped with three different amounts of Nb. The structural, morphological, chemical, and electrochemical properties of the composite nanophases were investigated using field emission scanning electron microscopy, transmission electron microscopy, Brunauer-Emmet-Teller analysis, X-ray diffraction, X-ray photoelectron spectroscopy, and cyclic voltammograms (CVs). The CV results indicated that the nanophase Ru-RuO2 composites decorated on the wrinkled NTO NFs possessed superior capacitance (similar to 496.3 F/g at 5 mV/s) and good high-rate capacitance because of the synergistic effect of the increased specific surface area of the wrinkled NTO NF supports and the presence of the nanophase Ru-RuO2 composites.
引用
收藏
页码：4785 / 4793
页数：9
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