The electrochemical CO₂ reduction reaction (CO₂RR) catalyzed by metal nanostructures has been studied extensively in recent years. This research has led to a better understanding of the reaction as it occurs on nanomaterial surfaces to achieve efficient conversion of CO₂ to specific carbon products. This review focuses on metallic nanocatalysts designed and prepared to catalyze the electrochemical CO₂RR. It also summarizes new strategies developed to further enhance catalysis at the atomic scale that lead to more efficient conversion of CO₂. Active and selective conversion of CO₂ to hydrocarbons is an important step toward a society based on renewable energy.

近年来，对金属纳米结构催化的电化学CO ₂还原反应（CO ₂ RR）进行了广泛的研究。这项研究使人们更好地理解了反应发生在纳米材料表面上，以实现将CO ₂有效转化为特定碳产物的过程。这篇综述着重于设计和制备用于催化电化学CO ₂ RR的金属纳米催化剂。它还总结了为进一步增强原子尺度上的催化作用而开发的新策略，这些策略可导致更有效地转化CO ₂。将CO ₂主动和选择性转化为碳氢化合物是向基于可再生能源的社会迈出的重要一步。