A High-Performance Composite Electrode for Vanadium Redox Flow Batteries

被引：170
作者：
Deng, Qi
Huang, Peng
Zhou, Wen-Xin
Ma, Qiang
Zhou, Nan
Xie, Hao
Ling, Wei
Zhou, Chun-Jiao
Yin, Ya-Xia
Wu, Xiong-Wei
Lu, Xiang-Yang
Guo, Yu-Guo
机构：
[1] College of Science, and College of Bioscience and Biotechnology, Hunan Agricultural University, and Hunan Agricultural Bioengineering Research Institute, Changsha
[2] College of Science, National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanica, College of Agronomy, Hunan Agricultural University, Changsha
[3] Hunan Province YinFeng New Energy Co. Ltd, Changsha
[4] CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing
来源：
ADVANCED ENERGY MATERIALS | 2017年 / 7卷 / 18期
关键词：
composite electrodes; high efficiency; large current density; reduced graphene oxide; vanadium redox flow batteries; REDUCED GRAPHENE OXIDE; CARBON NANOTUBES; GRAPHITE OXIDE; POSITIVE ELECTRODE; REACTION CATALYST; FELT; VO2+/VO2+; REDUCTION; CELL; ELECTROCATALYST;
D O I：
10.1002/aenm.201700461
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A composite electrode composed of reduced graphene oxide-graphite felt (rGO-GF) with excellent electrocatalytic redox reversibility toward V2+/V3+ and VO2+/VO2+ redox couples in vanadium batteries was fabricated by a facile hydrothermal method. Compared with the pristine graphite felt (GF) electrode, the rGO-GF composite electrode possesses abundant oxygen functional groups, high electron conductivity, and outstanding stability. Its corresponding energy efficiency and discharge capacity are significantly increased by 20% and 300%, respectively, at a high current density of 150 mA cm(-2). Moreover, a discharge capacity of 20 A h L-1 is obtained with a higher voltage efficiency (74.5%) and energy efficiency (72.0%), even at a large current density of 200 mA cm(-2). The prepared rGO-GF composite electrode holds great promise as a high-performance electrode for vanadium redox flow battery (VRFB).
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页数：7
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