钌
分解水
化学计量学
双功能
纳米颗粒
纳米技术
膜
离子交换
材料科学
化学
化学工程
无机化学
离子
催化作用
生物化学
有机化学
工程类
物理化学
光催化
作者
Sheng Min Zhao,Sung‐Fu Hung,Liming Deng,Wen‐Jing Zeng,Xiaobo Tian,Shaoxiong Li,Chun‐Han Kuo,Han‐Yi Chen,Feng Hu,Shengjie Peng
标识
DOI:10.1038/s41467-024-46750-6
摘要
Establishing appropriate metal-support interactions is imperative for acquiring efficient and corrosion-resistant catalysts for water splitting. Herein, the interaction mechanism between Ru nanoparticles and a series of titanium oxides, including TiO, Ti4O7 and TiO2, designed via facile non-stoichiometric engineering is systematically studied. Ti4O7, with the unique band structure, high conductivity and chemical stability, endows with ingenious metal-support interaction through interfacial Ti-O-Ru units, which stabilizes Ru species during OER and triggers hydrogen spillover to accelerate HER kinetics. As expected, Ru/Ti4O7 displays ultralow overpotentials of 8 mV and 150 mV for HER and OER with a long operation of 500 h at 10 mA cm-2 in acidic media, which is expanded in pH-universal environments. Benefitting from the excellent bifunctional performance, the proton exchange membrane and anion exchange membrane electrolyzer assembled with Ru/Ti4O7 achieves superior performance and robust operation. The work paves the way for efficient energy conversion devices.
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