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- W4295015377 abstract "Copper is an essential nutrient for all living things and as the component of more than 30 enzymes in the human body for the development of connective tissue, nerve coverings. However, carbon materials doped with nitrogen and transition metal singlet (MNC) with CuN4 site as reaction center usually exhibit unsatisfactory oxygen reduction reaction (ORR) activity, due to poor O2 adsorption and activation. In this work, density functional theory (DFT) was used to explore the effect of introducing heteroatoms such as B, N, P, and S into the first and second coordination spheres to improve the ORR catalytic activity for CuNC. Through the study of 41 model systems, we predicted CuN3 (ηORR = 0.32 V), CuN4P (II) (ηORR = 0.49 V) and CuN4S2(II) (ηORR = 0.37 V) fragments would have good ORR catalytic activity. This is due to the increased charge and tailored d-band fine structure, optimizing the reaction intermediate binding strength. These findings indicate the influence of the ligand field (formed by the anion in the first and second coordination spheres) on the catalytic activity and provide a new direction for the synthesis of high-efficiency electrocatalyst materials." @default.
- W4295015377 created "2022-09-09" @default.
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- W4295015377 date "2022-12-01" @default.
- W4295015377 modified "2023-10-16" @default.
- W4295015377 title "Rational design of the first and second coordination spheres for copper single-atom catalyst to boost highly efficient oxygen reduction" @default.
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- W4295015377 doi "https://doi.org/10.1016/j.apsusc.2022.154832" @default.
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