Cyclodextrin‐supported Co(OH)<sub>2</sub> Clusters as Electrocatalysts for Efficient and Selective H<sub>2</sub>O<sub>2</sub> Synthesis
Defeng Qi, Jie Xu, Yitong Zhou, Hao Zhang, Jianqiao Shi, Kun He, Yifei Yuan, Jun Luo, Shun Wang, Yong Wang
Abstract
Abstract Co‐based material catalysts have shown attractive application prospects in the 2 e − oxygen reduction reaction (ORR). However, for the industrial synthesis of H 2 O 2 , there is still lack of Co‐based catalysts with high production yield rate. Here, novel cyclodextrin‐supported Co(OH) 2 cluster catalysts were prepared via a mild and facile method. The catalyst exhibited remarkable H 2 O 2 selectivity (94.2 % ~ 98.2 %), good stability (99 % activity retention after 35 h), and ultra‐high H 2 O 2 production yield rate (5.58 mol g catalyst −1 h −1 in the H‐type electrolytic cell), demonstrating its promising industrial application potential. Density functional theory (DFT) reveals that the cyclodextrin‐mediated Co(OH) 2 electronic structure optimizes the adsorption of OOH* intermediates and significantly enhances the activation energy barrier for dissociation, leading to the high reactivity and selectivity for the 2 e − ORR. This work offers a valuable and practical strategy to design Co‐based electrocatalysts for H 2 O 2 production.