Research progress of electrocatalysts for the preparation of H2O2 by electrocatalytic oxygen reduction reaction

Abstract As an eco‐friendly oxidant and energy carrier, H 2 O 2 is used in various fields. The industrial production of H 2 O 2 mostly depends on the large‐scale anthraquinone oxidation processes with high costs. Electrocatalytic production of H 2 O 2 has attracted attention as a renewable and cost‐effective approach to replace traditional ones. With the recent development of oxygen reduction reaction (ORR) catalysts, remarkable progress in electrocatalysts for electrocatalytic H 2 O 2 production by 2e − ORR has been reported. This review summarizes a detailed overview of the recent progress in 2e − ORR for H 2 O 2 production with the mechanism and various efficient catalysts. The catalysts were divided into three parts: noble metal‐based catalyst, non‐noble metal‐based catalyst, and non‐metal‐based catalyst. The influences of the catalytic activity and selectivity were also discussed. Finally, this review explores the prospects of electrocatalytic 2e − ORR for H 2 O 2 synthesis and potential research directions for electrocatalysts. It aims to offer guidance in designing efficient 2e − ORR electrocatalysts and inspire further innovation in electrocatalytic H 2 O 2 synthesis.