The effect of heat treatment of graphite felt (GF) electrode on the performance of aqueous redox flow batteries (ARFBs) using Ferrocyanide and iron-3-[Bis(2-hydroxyethyl)amino]-2-hydroxy-propanesulfonic acid complex (Fe(DIPSO)) as redox couple was evaluated. For the heat treatment of GF, temperature and retention time were determined as main parameters to affect the performance of ARFB. With their changes, the double layer capacitance (DLC) and surface area of GF electrodes were varied. When GF was heat treated at 600 °C for 1 h, its DLC and surface area were best as 0.3708 F g⁻¹ and 1.8408 m² g⁻¹. With the enhancements in DLC and surface area, the redox reactivity of Ferrocyanide and Fe(DIPSO) also improved, while their charge transfer resistance reduced. When the heat treated GF was used as electrodes, ARFB single cell using Ferrocyanide and Fe(DIPSO) showed better performance than ARFB single cell using pristine GF without heat treatment. For example, with the heat-treated GF, energy efficiency increased from 56 to 63% at a high current density of 200 mA cm⁻², and its maximum power density was 14% more improved.

石墨毡 (GF) 电极的热处理对使用亚铁氰化物和铁-3-[双(2-羟乙基)氨基]-2-羟基-丙磺酸络合物 (Fe(评价了作为氧化还原对的 DIPSO))。对于 GF 的热处理，温度和停留时间被确定为影响 ARFB 性能的主要参数。随着它们的变化，GF电极的双层电容（DLC）和表面积也发生了变化。GF在600 ℃热处理1 h时，其DLC和表面积最好，分别为0.3708 F g ^-1和1.8408 m ² g ^-1. 随着 DLC 和表面积的增加，亚铁氰化物和 Fe(DIPSO) 的氧化还原反应性也提高了，而它们的电荷转移电阻降低了。当热处理的 GF 用作电极时，使用亚铁氰化物和 Fe(DIPSO) 的 ARFB 单电池表现出比使用未经热处理的原始 GF 的 ARFB 单电池更好的性能。例如，经过热处理的GF，在200 mA cm ^-2的高电流密度下，能量效率从56%提高到63% ，其最大功率密度提高了14%。