Catalysts research for electrocatalytic CO₂ reduction reactions (CO₂R) has undergone rapid growth in the last decade. Single-atom alloy catalysts (SAAs) featuring atomically dispersed metal dopants on host metal surfaces have shown promises in boosting CO₂R yield by optimizing the structure and synergy of the catalytic metals at the atomic scale. Despite the exciting development of SAAs for CO₂R in fundamental science, dedicated studies for its engineering implementation have been absent. We use this perspective to discuss our non-exhaustive engineering considerations for implementing SAAs for CO₂R. The perspective starts with a brief overview of the current research status for SAAs in CO₂R, followed by focal points on structure uncertainties associated with catalyst manufacturing, catalyst layer degradation during reaction, and possibilities for SAAs to mitigate the salt precipitation issue at the device level. We hope our opinions will engage increasing attention toward the engineering catalysis research for applying SAAs to CO₂R at scale.

中文翻译：

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实现用于低温电催化 CO2 还原的单原子合金催化剂的工程复杂性


电催化 CO₂ 还原反应 （CO₂R） 的催化剂研究在过去十年中经历了快速增长。在主体金属表面具有原子分散金属掺杂剂的单原子合金催化剂 （SAA） 有望通过在原子尺度上优化催化金属的结构和协同作用来提高 CO₂R 产率。尽管 CO₂R 的 SAA 在基础科学中取得了令人振奋的发展，但对其工程实施的专门研究一直缺乏。我们用这个观点来讨论我们为 CO₂R 实施 SAA 的非详尽工程考虑因素。该观点首先简要概述了 CO₂R 中 SAA 的当前研究现状，然后是与催化剂制造相关的结构不确定性、反应过程中催化剂层降解以及 SAA 在装置层面缓解盐析问题的可能性。我们希望我们的意见能够引起人们对大规模将 SAAs 应用于 CO₂R 的工程催化研究的更多关注。