Bifunctional 2D structured catalysts for air electrodes in rechargeable metal–air batteries
Chengang Pei, Dong Zhang, Jaekyum Kim, Xu Yu, Uk Sim, Ho Seok Park, Jung Kyu Kim
Correspondence Address: Prof. Uk Sim, Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea. E-mail: firstname.lastname@example.org; Prof. Ho Seok Park, School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-Ro, Suwon 16419, Republic of Korea. E-mail: email@example.com; Prof. Jung Kyu Kim, School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-Ro, Suwon 16419, Republic of Korea. E-mail: firstname.lastname@example.org
Received: 31 Aug 2023 | Revised: 27 Oct 2023 | Accepted: 10 Nov 2023
© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/
), which permits unrestricted use, sharing, adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
The inherent technical challenges of metal–air batteries (MABs), arising from the sluggish redox electrochemical reactions on the air electrode, significantly affect the efficiency and life cycle of these batteries. Two-dimensional (2D) nanomaterials with near-atomic thickness have potential as bifunctional catalysts in MABs, because of their distinct structures, exceptional physical properties, and tunable surface chemistries. In this study, the chemistry of representative 2D materials was elucidated and the comprehensive analysis of the primary modification techniques including geometric structure manipulation, defect engineering, crystal facet selection, heteroatom doping, single-atom catalyst construction, and composite material synthesis was conducted. The correlation between material structure and activity is illustrated by example, with the aim of leading the development of advanced catalysts in MABs. We also focus on the future of MABs from the perspective of bifunctional catalysts, definite mechanisms, and standard measurement. We expect this work to serve as a guide for the design of air electrode materials that can be used in MABs.
Two-dimensional material, metal–air battery, air electrode, bifunctional catalyst, oxygen electrochemistry
Cite This Article
Pei C, Zhang D, Kim J, Yu X, Sim U, Park HS, Kim JK. Bifunctional 2D structured catalysts for air electrodes in rechargeable metal–air batteries. Energy Mater 2023;3:[Accept]. http://dx.doi.org/10.20517/energymater.2023.66