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.
Yu, LH; Lin, F; Xu, L; Xi, JY
P-doped electrode for vanadium flow battery with high-rate capability and all-climate adaptability
Journal Of Energy Chemistry