过电位
电催化剂
催化作用
化学
Atom(片上系统)
析氧
氧原子
电化学
化学物理
密度泛函理论
氧气
物理化学
计算化学
分子
电极
有机化学
生物化学
计算机科学
嵌入式系统
作者
Peiyu Ma,Heng Cao,Hao Qi,Ruyang Wang,Wanting Liu,Ming J. Zuo,Chuanyi Jia,Z. D. Zhang,Jun Bao
标识
DOI:10.1002/anie.202404418
摘要
The catalytic performance of single‐atom catalysts was strictly limited by isolated single‐atom sites. Fabricating high‐density single atoms to realize the synergetic interaction in neighbouring single atoms could optimize the adsorption behaviors of reaction intermediates, which exhibited great potential to break performance limitations and deepen mechanistic understanding of electrocatalysis. However, the catalytic behavior governed by neighbouring single atoms is particularly elusive and has yet to be understood. Herein, we revealed that the synergetic interaction in neighbouring single atoms contributes to superior performance for oxygen evolution relative to isolated Ir single atoms. Neighbouring single atoms was achieved by fabricating high‐density single atoms to narrow the distance between single atoms. Electrochemical measurements demonstrated that the Nei‐Ir1/CoGaOOH with neighbouring Ir single atoms exhibited a low overpotential of 170 mV at a current density of 10 mA cm−2, and long‐durable stability over 2000 h for oxygen evolution. Mechanistic studies revealed that neighbouring single atoms synergetic stabilized the *OOH intermediates via extra hydrogen bonding interactions, thus significantly reducing the reaction energy barriers, as compared to isolated Ir single atoms. The discovery of the synergetic interaction in neighbouring single atoms could offer guidance for the development of efficient electrocatalysts, thus accelerating the world's transition to sustainable energy.
科研通智能强力驱动
Strongly Powered by AbleSci AI