Zhou Ting, Wu Xianli, Liu Shuling, Wang Ao, Liu Yanyan, Zhou Wenshu, Sun Kang, Li Shuqi, Zhou Jingjing, Li Baojun, Jiang Jianchun
College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China.
Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab on Forest Chemical Engineering, SFA, 16 Suojinwucun, Nanjing, 210042, P. R. China.
ChemSusChem. 2024 Jul 22;17(14):e202301779. doi: 10.1002/cssc.202301779. Epub 2024 Mar 18.
Given the growing environmental and energy problems, developing clean, renewable electrochemical energy storage devices is of great interest. Zn-air batteries (ZABs) have broad prospects in energy storage because of their high specific capacity and environmental friendliness. The unavailability of cheap air electrode materials and effective and stable oxygen electrocatalysts to catalyze air electrodes are main barriers to large-scale implementation of ZABs. Due to the abundant biomass resources, self-doped heteroatoms, and unique pore structure, biomass-derived catalytically active carbon materials (CACs) have great potential to prepare carbon-based catalysts and porous electrodes with excellent performance for ZABs. This paper reviews the research progress of biomass-derived CACs applied to ZABs air electrodes. Specifically, the principle of ZABs and the source and preparation method of biomass-derived CACs are introduced. To prepare efficient biomass-based oxygen electrocatalysts, heteroatom doping and metal modification were introduced to improve the efficiency and stability of carbon materials. Finally, the effects of electron transfer number and HO yield in ORR on the performance of ZABs were evaluated. This review aims to deepen the understanding of the advantages and challenges of biomass-derived CACs in the air electrodes of ZABs, promote more comprehensive research on biomass resources, and accelerate the commercial application of ZABs.
鉴于日益严重的环境和能源问题，开发清洁、可再生的电化学储能装置备受关注。锌空气电池（ZABs）因其高比容量和环境友好性在储能领域具有广阔前景。廉价空气电极材料的缺乏以及用于催化空气电极的有效且稳定的氧电催化剂是阻碍ZABs大规模应用的主要障碍。由于生物质资源丰富、存在自掺杂杂原子以及具有独特的孔结构，生物质衍生的催化活性碳材料（CACs）在制备具有优异性能的用于ZABs的碳基催化剂和多孔电极方面具有巨大潜力。本文综述了生物质衍生的CACs应用于ZABs空气电极的研究进展。具体介绍了ZABs的原理以及生物质衍生的CACs的来源和制备方法。为制备高效的生物质基氧电催化剂，引入了杂原子掺杂和金属改性以提高碳材料的效率和稳定性。最后，评估了氧还原反应（ORR）中的电子转移数和HO产率对ZABs性能的影响。本综述旨在加深对生物质衍生的CACs在ZABs空气电极中的优势和挑战的理解，促进对生物质资源进行更全面的研究，并加速ZABs的商业应用。
