氧化还原
材料科学
氧气
析氧
纳米技术
电催化剂
过渡金属
化学物理
阳极
催化作用
化学工程
物理化学
电化学
冶金
化学
有机化学
电极
工程类
生物化学
作者
Xiangrong Ren,Yiyue Zhai,Na Yang,Bolun Wang,Shengzhong Liu
标识
DOI:10.1002/adfm.202401610
摘要
Abstract Understanding of fundamental mechanism and kinetics of the oxygen evolution reaction (OER) is pivotal for designing efficient OER electrocatalysts owing to its key role in electrochemical energy conversion devices. In the past few years, the lattice oxygen oxidation mechanism (LOM) arising from the anodic redox chemistry has attracted significant attention as it involves a direct O─O coupling and thus bypasses thermodynamic limitations in the traditional adsorbate evolution mechanism (AEM). Transition metal‐based oxyhydroxides are generally acknowledged as the real catalytic phase in alkaline media. In particular, their low‐dimensional layered structures offer sufficient structural flexibility to trigger the LOM. Herein, a comprehensive overview is provided for recent advances in anion redox from LOM‐based electrocatalysts. Based on analyses of electronic structure of electrocatalysts and LOM, a strategy is proposed to activate LOM. Possible identification techniques for corroboration of the oxygen redox are also reviewed. In addition, the structural reconstruction process induced by the LOM is focused and the importance of multiple in situ/operando characterizations is highlighted to unveil the structural and chemical origins of the LOM. To conclude, a prospect on the remaining challenges and future opportunities for LOM electrocatalysts is presented.
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