过电位
催化作用
电催化剂
铂金
离解(化学)
氢
贵金属
电解水
分解水
制氢
材料科学
纳米颗粒
化学工程
化学
无机化学
纳米技术
电解
电化学
物理化学
电极
有机化学
光催化
工程类
电解质
作者
Yiming Zhu,Malte Klingenhof,Chao Gao,Toshinari Koketsu,G. Weiser,Yecan Pi,Shangheng Liu,Lijun Sui,Jingrong Hou,Jiayi Li,Hao Jiang,Limin Xu,Wei‐Hsiang Huang,Chih‐Wen Pao,Mingjie Yang,Z. Hu,Peter Strasser,Jiwei Ma
标识
DOI:10.1038/s41467-024-45654-9
摘要
Exploring an active and cost-effective electrocatalyst alternative to carbon-supported platinum nanoparticles for alkaline hydrogen evolution reaction (HER) have remained elusive to date. Here, we report a catalyst based on platinum single atoms (SAs) doped into the hetero-interfaced Ru/RuO2 support (referred to as Pt-Ru/RuO2), which features a low HER overpotential, an excellent stability and a distinctly enhanced cost-based activity compared to commercial Pt/C and Ru/C in 1 M KOH. Advanced physico-chemical characterizations disclose that the sluggish water dissociation is accelerated by RuO2 while Pt SAs and the metallic Ru facilitate the subsequent H* combination. Theoretical calculations correlate with the experimental findings. Furthermore, Pt-Ru/RuO2 only requires 1.90 V to reach 1 A cm-2 and delivers a high price activity in the anion exchange membrane water electrolyzer, outperforming the benchmark Pt/C. This research offers a feasible guidance for developing the noble metal-based catalysts with high performance and low cost toward practical H2 production.
科研通智能强力驱动
Strongly Powered by AbleSci AI