Perovskite Oxides for Electrochemical Small Molecule Oxidation: Advances and Mechanisms

Abstract

As global demand for sustainable energy grows, developing efficient and eco-friendly energy conversion and utilization technologies has become a key research focus. In this context, the electrocatalytic oxidation of small organic molecules (MEOR) has attracted significant attention for its potential to produce hydrogen and valuable chemicals simultaneously with lower energy consumption.Thanks to their structural adjustability and excellent catalytic properties, perovskite oxides have become highly promising catalysts for MEOR. This review summarizes recent advances in applying perovskite oxides to the electro-oxidation of alcohols, urea, amines, and other organic molecules, with a focus on how structure relates to catalytic performance. The effects of A-site/B-site cation regulation, valence tuning, oxygen vacancies, and the interplay between defect chemistry and electronic conductivity are examined. Additionally, the distinct features and mechanisms of different small-molecule oxidation reactions are analyzed. This review aims to provide theoretical guidance for designing high-performance electrocatalysts, enhance understanding of perovskite oxide catalysis, and support their practical use in energy conversion systems.