Bimetallic-Based Electrocatalysts for Oxygen Evolution Reaction

摘要

The electrochemical oxygen evolution reaction (OER) is a core electrodereaction for the renewable production of high-purity hydrogen, carbon-basedfuel, synthetic ammonia, etc. However, the sluggish kinetics of the OER resultin a high overpotential and limit the widespread application of OER-basedtechnologies. Recent studies have shown that bimetallic-based materials withthe synergism of different metal components to regulate the adsorption anddissociation energy of intermediates are promising OER electrocatalyst candidateswith a lower cost and energy consumption. In the past two decades,tremendous efforts have been devoted to developing OER applications ofbimetallic-based materials with a focus on compositions, phase, structure,etc., to highlight the synergism of different metal components. However,there is a lack of critical thinking and organized analysis of OER applicationswith bimetallic-based materials. This review critically discusses the challengesof developing bimetallic-based OER materials, summarizes the currentoptimization strategies to enhance both activity and stability, and highlightsthe state-of-the-art electrocatalysts for OER. The relationship between thecomponential/structural features of bimetallic-based materials and theirelectrocatalytic properties is presented to form comprehensive electronicand geometric modifications based on thorough analysis of the reportedworks and discuss future efforts to realize sustainable bimetallic-based OERapplications.