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Panlong Zhai, Chen Wang, Yuanyuan Zhao, Yanxue Zhang, Junfeng Gao, Licheng Sun, Jungang Hou
Rational design efficient transition metal-based electrocatalysts for oxygen evolution reaction (OER) is critical for water splitting. However, industrial water-alkali electrolysis requires large current densities at low overpotentials, always limited by intrinsic activity. Herein, we report hierarchical bimetal nitride/hydroxide (NiMoN/NiFe LDH) array as model catalyst, regulating the electronic states and tracking the relationship of structure-activity. As-activated NiMoN/NiFe LDH exhibits the industrially required current density of 1000 mA cm −2 at overpotential of 266 mV with 250 h stability for OER. Especially, in-situ electrochemical spectroscopic reveals that heterointerface facilitates dynamic structure evolution to optimize electronic structure. Operando electrochemical impedance spectroscopy implies accelerated OER kinetics and intermediate evolution due to fast charge transport. The OER mechanism is revealed by the combination of theoretical and experimental studies, indicating as-activated NiMoN/NiFe LDH follows lattice oxygen oxidation mechanism with accelerated kinetics. This work paves an avenue to develop efficient catalysts for industrial water electrolysis via tuning electronic states.
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Zhai, P., Wang, C., Zhao, Y., Zhang, Y., Gao, J., Sun, L., & Hou, J. (2023). Regulating electronic states of nitride/hydroxide to accelerate kinetics for oxygen evolution at large current density. Nature Communications, 14(1), 1873. https://doi.org/10.1038/s41467-023-37091-x
Zhai, Panlong, et al. "Regulating electronic states of nitride/hydroxide to accelerate kinetics for oxygen evolution at large current density." Nature Communications, vol. 14, no. 1, 2023, pp. 1873, https://doi.org/10.1038/s41467-023-37091-x.
Zhai, Panlong, Chen Wang, Yuanyuan Zhao, Yanxue Zhang, Junfeng Gao, Licheng Sun, and Jungang Hou. "Regulating electronic states of nitride/hydroxide to accelerate kinetics for oxygen evolution at large current density." Nature Communications 14, no. 1 (2023): 1873. https://doi.org/10.1038/s41467-023-37091-x.
Zhai P., Wang C., Zhao Y. [и др.] Regulating electronic states of nitride/hydroxide to accelerate kinetics for oxygen evolution at large current density // Nature Communications. — 2023. — Vol. 14, № 1. — P. 1873. — URL: https://doi.org/10.1038/s41467-023-37091-x
@article{zhai2023regulating,
title = {{Regulating electronic states of nitride/hydroxide to accelerate kinetics for oxygen evolution at large current density}},
author = {Panlong Zhai and Chen Wang and Yuanyuan Zhao and Yanxue Zhang and Junfeng Gao and Licheng Sun and Jungang Hou},
journal = {Nature Communications},
year = {2023},
volume = {14},
number = {1},
pages = {1873},
doi = {10.1038/s41467-023-37091-x},
url = {https://doi.org/10.1038/s41467-023-37091-x}
}TY - JOUR AU - Zhai, Panlong AU - Wang, Chen AU - Zhao, Yuanyuan AU - Zhang, Yanxue AU - Gao, Junfeng AU - Sun, Licheng AU - Hou, Jungang TI - Regulating electronic states of nitride/hydroxide to accelerate kinetics for oxygen evolution at large current density JO - Nature Communications VL - 14 IS - 1 SP - 1873 PY - 2023 DA - 2023/04/04 DO - 10.1038/s41467-023-37091-x UR - https://doi.org/10.1038/s41467-023-37091-x ER -
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