Carbon felt coated with titanium dioxide/carbon black composite as negative electrode for vanadium redox flow battery

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题名:	Carbon felt coated with titanium dioxide/carbon black composite as negative electrode for vanadium redox flow battery
作者:	劉炯權;Tseng, Tung-Mo;Huang, Rong-Hsin;Huang, Chung-Yen;Liu, Chung-Chiun;Hsueh, Kan-Lin;Shieu, Fuh-Sheng
贡献者:	工學院材料科學與工程研究所
日期:	2014-01-01
上传时间:	2026-04-23 11:29:22 (UTC+8)
出版者:	Electrochemical Society, Inc.;The Electrochemical Society
摘要:	摘要： This investigation focuses on the effect of titanium dioxide (TiO2) coatings of a carbon black (XC-72) negative electrode on the performance of a vanadium redox flow battery (VRFB). TiO2, a hydrophilic material, was added to the carbon electrode to improve the wettability and reduce the electrical resistance of the electrode surface. The electrochemical performances of homemade TiO2, commercial TiO2, and carbon felt are investigated by using cyclic voltammetry and single-cell charge-discharge measurements. An electrode with 20 wt% of fabricated TiO2 loading at a scan rate of 0.006 V s−1 shows a specific capacitance (Cs,t) of 186.2 F g−1, which is 55.5% and 12.2% higher than that of pure carbon electrode (119.7 F g−1) and commercial TiO2 (166.0 F g−1), respectively. At current density of 200 mA cm−2, the energy storage efficiency (ηE = 65.4%) of the single cell with 20 wt% homemade TiO2/C-containing carbon felt negative electrode is 16.0% and 6.1% higher than that of the negative electrode with raw carbon felt (ηE = 56.4%) and of the negative electrode containing commercial TiO2/C (ηE = 61.6%), respectively. These results demonstrate the potential application of TiO2/C electrodes for high-efficiency VRFBs at high current densities. 其他題名： J. Electrochem. Soc 出版者： The Electrochemical Society 出版日期： 2014-01-01 出處： Journal of the Electrochemical Society, 2014-01, Vol.161 (6), p.A1132-A1138 資源來源： Institute of Physics Journals (IReL) 版權： The Author(s) 2014. Published by ECS. 識別號： ISSN: 0013-4651 識別號： ISSN: 1945-7111 識別號： EISSN: 1945-7111 識別號： DOI: 10.1149/2.102406jes
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