P-doped electrode for vanadium flow battery with high-rate capability and all-climate adaptability

被引：48
作者：
Yu, Lihong [1 ]
Lin, Feng [1 ]
Xu, Lin [1 ]
Xi, Jingyu [2 ]
机构：
[1] Shenzhen Polytech, Sch Appl Chem & Biol Technol, Shenzhen 518055, Guangdong, Peoples R China
[2] Tsinghua Univ, Grad Sch Shenzhen, Inst Green Chem & Energy, Shenzhen 518055, Peoples R China
来源：
JOURNAL OF ENERGY CHEMISTRY | 2019年 / 35卷
基金：
中国国家自然科学基金;
关键词：
Vanadium flow battery; Graphite felt; P doping; High-power electrode; All-climate; BROAD TEMPERATURE ADAPTABILITY; GRAPHITE FELT; PERFORMANCE; VO2+/VO2+; EFFICIENT;
D O I：
10.1016/j.jechem.2018.11.004
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A phosphorous-doped graphite felt (PGF) is fabricated and examined as electrode for vanadium flow battery (VFB). P doping improves the electrolyte wettability of GF and induces more defect sites on its surface, resulting in significantly enhanced activity and reversibility towards VO2+/VO2+ and V2+/V3+ couples. VFB with PGF electrode demonstrates outstanding performance such as high-rate capability under 50-400 mA cm(-2), wide-temperature tolerance at -20 degrees C-60 degrees C, and excellent durability over 1000 charge-discharge cycles. These merits enable PGF a promising electrode for the next-generation VFB, which can operate at high-power and all-climate conditions. (C) 2018 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
引用
收藏
页码：55 / 59
页数：5
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