Hydrogen peroxide (H₂O₂) electrosynthesis through oxygen reduction reaction (ORR) is drawing worldwide attention, whereas suffering seriously from the sluggish oxygen evolution reaction (OER) and the difficult extraction of thermodynamically unstable H₂O₂. Herein, we present an electrosynthesis protocol involving coupling ORR-to-H₂O₂ with waste polyethylene terephthalate (PET) upcycling and the first H₂O₂ conversion strategy. Ni-Mn bimetal- and onion carbon-based catalysts are designed to catalyze ORR-to-H₂O₂ and ethylene glycol electrooxidation with the Faradaic efficiency of 97.5% (H₂O₂) and 93.0% (formate). This electrolysis system runs successfully at only 0.927 V to achieve an industrial-scale current density of 400 mA cm⁻², surpassing all reported H₂O₂ electrosynthesis systems. H₂O₂ product is upgraded through two downstream routes of converting H₂O₂ into sodium perborate and dibenzoyl peroxide. Techno-economic evolution highlights the high gross profit of the ORR || PET upcycling protocol over HER || PET upcycling and ORR || OER. This work provides an energy-saving methodology for the electrosynthesis of H₂O₂ and other chemicals.

通过氧还原反应(ORR)电合成过氧化氢(H ₂ O ₂ )引起了全世界的关注，但其严重受制于析氧反应(OER)缓慢和热力学不稳定的H ₂ O ₂的提取困难。在此，我们提出了一种电合成方案，涉及将 ORR-to-H ₂ O ₂与废聚对苯二甲酸乙二醇酯 (PET) 升级循环和第一个 H ₂ O ₂转化策略偶联。 Ni-Mn双金属和洋葱碳基催化剂设计用于催化ORR-to-H ₂ O ₂和乙二醇电氧化，法拉第效率为97.5%（H ₂ O ₂ ）和93.0%（甲酸盐）。该电解系统仅在0.927 V的电压下成功运行，实现了400 mA cm ^-2的工业规模电流密度，超过了所有报道的H ₂ O ₂电合成系统。 H ₂ O ₂产品通过两条下游路线将H ₂ O ₂转化为过硼酸钠和过氧化二苯甲酰进行升级。技术经济演变凸显 ORR 的高毛利润 || HER 上的 PET 升级回收协议 || PET 升级回收和 ORR ||开放教育资源。这项工作为H ₂ O ₂和其他化学品的电合成提供了一种节能方法。