Hydrogen peroxide (H₂O₂) is a valuable chemical with a wide range of applications. A recent trend in H₂O₂ production focuses on electrochemical reduction of oxygen, which represents an environmentally friendly method for on-site H₂O₂ generation. To realize highly efficient practical-scale electrosynthesis of H₂O₂, catalytic materials design and electrochemical reactor engineering play equally important roles and must be carefully investigated. A highly active catalyst with superior selectivity and stability is the foundation for efficient H₂O₂ production, and well-configured reactors are important to realize practical deployment of on-site H₂O₂ production in large scales. In this review, an overview of the recent progress (over the past 3 years) in electrochemical production of H₂O₂ is presented, with an emphasis on the development of selective catalysts, especially the atomic tuning of carbon-based catalysts and single-atom catalysts, as well as electrode engineering and electrochemical cell design.

过氧化氢（H ₂ O ₂）是一种有价值的化学品，具有广泛的应用范围。H ₂ O ₂生产的最新趋势集中于氧气的电化学还原，这是现场生成H ₂ O _2的一种环保方法。为了实现H ₂ O _2的高效实用规模的电合成，催化材料的设计和电化学反应器工程起着同等重要的作用，必须仔细研究。高选择性和高稳定性的高活性催化剂是高效H ₂ O ₂的基础生产和配置合理的反应器对于实现大规模现场部署H ₂ O _2的实际部署很重要。在这篇综述中，概述了电化学生产H ₂ O ₂的最新进展（过去3年），重点是选择性催化剂的开发，尤其是碳基催化剂和单催化剂的原子调谐。原子催化剂，以及电极工程和电化学电池设计。