过电位
钴
催化作用
析氧
氧气
分解水
兴奋剂
电催化剂
电解水
化学
钙钛矿(结构)
材料科学
无机化学
化学工程
电解
物理化学
有机化学
结晶学
电化学
电极
光催化
电解质
工程类
光电子学
作者
Jiawei Zhao,Kaihang Yue,Hong Zhang,Shuyin Wei,Jiawei Zhu,Dongdong Wang,Junze Chen,V. Yu. Fominski,Gao‐Ren Li
标识
DOI:10.1038/s41467-024-46801-y
摘要
Electrocatalytic water splitting is a promising route for sustainable hydrogen production. However, the high overpotential of the anodic oxygen evolution reaction poses significant challenge. SrIrO3-based perovskite-type catalysts have shown great potential for acidic oxygen evolution reaction, but the origins of their high activity are still unclear. Herein, we develop a Co-doped SrIrO3 system to enhance oxygen evolution reaction activity and elucidate the origin of catalytic activity. In situ experiments reveal Co activates surface lattice oxygen, rapidly exposing IrOx active sites, while bulk Co doping optimizes the adsorbate binding energy of IrOx. The Co-doped SrIrO3 demonstrates high oxygen evolution reaction electrocatalytic activity, markedly surpassing the commercial IrO2 catalysts in both conventional electrolyzer and proton exchange membrane water electrolyzer.
科研通智能强力驱动
Strongly Powered by AbleSci AI