@article{Tang2023, 
author = {Tianmi Tang and Zhiyao Duan and Didar Baimanov and Xue Bai and Xinyu Liu and Liming Wang and Zhenlu Wang and Jingqi Guan},
title = {Synergy between isolated Fe and Co sites accelerates oxygen evolution},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {2},
pages = {2218-2223},
keywords = {theoretical calculation, oxygen evolution reaction, Fe-N-C, Co-N-C, dual-atom catalysis},
url = {https://www.sciopen.com/article/10.1007/s12274-022-5001-3},
doi = {10.1007/s12274-022-5001-3},
abstract = {Dual-metal catalysts with synergistic effect exhibit enormous potential for sustainable electrocatalytic applications and mechanism research. Compared with mono-metal-site catalysts, dual-metal-site catalysts exhibit higher efficiency for the oxygen evolution reaction (OER) due to reduced energy barrier of the process involving proton-coupled multi-electron transfer. Herein, we construct dual-metal Fe-Co sites coordinated with nitrogen in graphene (FeCo-NG), which exhibits high OER performance with onset overpotential of only 126 mV and Tafel slope of 120 mV·dec−1, showing that the rate-determining step is controlled by the single-electron transfer step. Theoretical calculations reveal that the FeN4 site exhibits lower OER overpotential than the CoN4 site due to appropriate adsorption energy of OOH* on the former, while the O* adsorbed on the adjacent Co site could stabilize the OOH* on the FeN4 site through hydrogen bond interaction.}
}