过电位
纳米片
化学物理
催化作用
离解(化学)
钌
材料科学
析氧
分子
硼
石墨氮化碳
光化学
纳米技术
化学工程
化学
物理化学
工程类
生物化学
光催化
电化学
电极
有机化学
作者
Yixin Hao,Sung‐Fu Hung,Cheng Tian,Luqi Wang,Yiyu Chen,Sheng Zhao,Kang-Lin Peng,Chenchen Zhang,Ying Zhang,Chun‐Han Kuo,Han‐Yi Chen,Shengjie Peng
标识
DOI:10.1002/anie.202402018
摘要
Developing ruthenium-based heterogeneous catalysts with an efficient and stable interface is essential for enhanced acidic oxygen evolution reaction (OER). Herein, we report a defect-rich ultrathin boron nitride nanosheet support with relatively independent electron donor and acceptor sites, which serves as an electron reservoir and receiving station for RuO2 , realizing the rapid supply and reception of electrons. Through precisely controlling the reaction interface, a low OER overpotential of only 180 mV (at 10 mA cm-2 ) and long-term operational stability (350 h) are achieved, suggesting potential practical applications. In situ characterization and theoretical calculations have validated the existence of a localized electronic recycling between RuO2 and ultrathin BN nanosheets (BNNS). The electron-rich Ru sites accelerate the adsorption of water molecules and the dissociation of intermediates, while the interconnection between the O-terminal and B-terminal edge establishes electronic back-donation, effectively suppressing the over-oxidation of lattice oxygen. This study provides a new perspective for constructing a stable and highly active catalytic interface.
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