Doǧan Hilal, Taş Mert, Meşeli Tuǧba, Elden Gülşah, Genc Gamze
Energy Systems Engineering Program, Graduate School of Natural and Applied Sciences, Erciyes University, Kayseri 38039, Turkey.
Electrochemical Storage and Energy Conversion Laboratory, Erciyes University, Kayseri 38039, Turkey.
ACS Omega. 2023 Sep 14;8(38):34310-34327. doi: 10.1021/acsomega.3c03648. eCollection 2023 Sep 26.
The development of vanadium redox flow batteries (VRFBs) requires the exploration of effective and affordable electrodes. In order to increase the electrochemical activity of these electrodes and decrease the polarizations, they are doped with an electrocatalyst. In this context, the use of biomass-derived materials as electrocatalysts in VRFBs has received much attention recently due to their widespread availability, renewable nature, low cost, and high energy efficiency. This paper aims to review the synthesis methods of biomass-derived carbon materials and their applications in VRFBs. In line with this aim, recent developments in carbon-based electrode modification methods and their electrochemical performance in VRFBs are summarized. The studies show that porous carbon electrocatalysts increase energy efficiency by reducing overpotentials and improving electrocatalytic activation. In addition, it is thought that biomass carbon doped electrocatalysts can improve the hydrophilicity of the electrodes, the transfer of vanadium ions, and the reaction kinetics. The highest charge voltage decrease rate of 8.61% was obtained in the , whereas the highest discharge voltage increase rate of 14.29% was observed in the twin cocoon, as in all reviewed studies. Furthermore, the maximum energy efficiency (75%) was achieved in a VRFB equipped with an electrode doped with carbon derived from and cuttlefish. It can be concluded from the reviewed studies that the electrochemical performances of electrodes doped with biomass-derived carbons in VRFBs are more effective than those of the bare electrodes.
钒氧化还原液流电池（VRFBs）的发展需要探索有效且经济实惠的电极。为了提高这些电极的电化学活性并降低极化，会在其中掺杂一种电催化剂。在此背景下，由于生物质衍生材料广泛可得、可再生、成本低且能源效率高，近年来在VRFBs中使用其作为电催化剂受到了广泛关注。本文旨在综述生物质衍生碳材料的合成方法及其在VRFBs中的应用。基于这一目的，总结了碳基电极改性方法的最新进展及其在VRFBs中的电化学性能。研究表明，多孔碳电催化剂通过降低过电位和改善电催化活化来提高能源效率。此外，人们认为生物质碳掺杂电催化剂可以提高电极的亲水性、钒离子的转移以及反应动力学。在所审查的所有研究中，在[此处信息缺失]中获得了最高的充电电压降低率8.61%，而在双茧中观察到了最高的放电电压增加率14.29%。此外，在配备有掺杂了来自[此处信息缺失]和乌贼的碳的电极的VRFB中实现了最大能源效率（75%）。从所审查的研究中可以得出结论，在VRFBs中掺杂生物质衍生碳的电极的电化学性能比裸电极更有效。
