Herein, a new method for the facile introduction of oxygen-containing functional groups on a carbon felt electrode in a short treatment time has been proposed for application in a vanadium redox flow batteries (VRFBs). Benzoyl peroxide (BPO) can produce free radicals by attacking the CC bonds or CH bonds of the carbon felt. The generated unstable free radicals allow further reactions with oxygen to yield oxygen-containing functional groups on the surface of the carbon felt electrode. The electrochemical performance of the BPO-treated carbon felt electrode toward the VO²⁺/VO₂⁺ redox reaction was superior to that of the pristine carbon felt electrode. Therefore, the VRFB cell employing the BPO-treated carbon felt electrode showed an outstanding energy efficiency of 75% at a current density of 100 mA cm⁻². This improvement is attributed to the well-known electrocatalytic effects of the oxygen-functionalized surface properties of the BPO-treated carbon felt electrode.

在此，提出了在短的处理时间内在碳毡电极上容易地引入含氧官能团的新方法，以用于钒氧化还原液流电池（VRFB）中。过氧化苯甲酰（BPO）可以通过攻击碳毡的C C键或C H键产生自由基。产生的不稳定自由基允许与氧进一步反应，从而在碳毡电极的表面上产生含氧官能团。BPO处理过的碳毡电极对VO ²⁺ / VO ₂ ⁺的电化学性能氧化还原反应优于原始碳毡电极。因此，采用BPO处理的碳毡电极的VRFB电池在 100mA  cm ^-2的电流密度下显示出75％的出色的能量效率。该改进归因于BPO处理的碳毡电极的氧官能化表面特性的众所周知的电催化作用。