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Lishan Peng, Na Yang, Yuqi Yang, Qing Wang, Xiaoying Xie, Dongxiao Sun‐Waterhouse, Lu Shang, Tierui Zhang, Geoffrey I. N. Waterhouse
NiFe‐layered double hydroxides (NiFe‐LDH) are among the most active catalysts developed to date for the oxygen evolution reaction (OER) in alkaline media, though their long‐term OER stability remains unsatisfactory. Herein, we reveal that the stability degradation of NiFe‐LDH catalysts during alkaline OER results from a decreased number of active sites and undesirable phase segregation to form NiOOH and FeOOH, with metal dissolution underpinning both of these deactivation mechanisms. Further, we demonstrate that the introduction of cation‐vacancies in the basal plane of NiFe LDH is an effective approach for achieving both high catalyst activity and stability during OER. The strengthened binding energy between the metals and oxygen in the LDH sheets, together with reduced lattice distortions, both realized by the rational introduction of cation vacancies, drastically mitigate metal dissolution from NiFe‐LDH under high oxidation potentials, resulting in the improved long‐term OER stability. In addition, the cation vacancies (especially M3+ vacancies) accelerate the evolution of surface γ‐(NiFe)OOH phases, thereby boosting the OER activity. The present study highlights that tailoring atomic cation‐vacancies is an important strategy for the development of active and stable OER electrocatalysts.
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Peng, L., Yang, N., Yang, Y., Wang, Q., Xie, X., Sun‐Waterhouse, D., Shang, L., Zhang, T., & Waterhouse, G. I. N. (2021). Atomic Cation‐Vacancy Engineering of NiFe‐Layered Double Hydroxides for Improved Activity and Stability towards the Oxygen Evolution Reaction. Angewandte Chemie International Edition, 60(46), 24612–24619. https://doi.org/10.1002/anie.202109938
Peng, Lishan, et al. "Atomic Cation‐Vacancy Engineering of NiFe‐Layered Double Hydroxides for Improved Activity and Stability towards the Oxygen Evolution Reaction." Angewandte Chemie International Edition, vol. 60, no. 46, 2021, pp. 24612–24619, https://doi.org/10.1002/anie.202109938.
Peng, Lishan, Na Yang, Yuqi Yang, Qing Wang, Xiaoying Xie, Dongxiao Sun‐Waterhouse, Lu Shang, Tierui Zhang, and Geoffrey I. N. Waterhouse. "Atomic Cation‐Vacancy Engineering of NiFe‐Layered Double Hydroxides for Improved Activity and Stability towards the Oxygen Evolution Reaction." Angewandte Chemie International Edition 60, no. 46 (2021): 24612–24619. https://doi.org/10.1002/anie.202109938.
Peng L., Yang N., Yang Y. [и др.] Atomic Cation‐Vacancy Engineering of NiFe‐Layered Double Hydroxides for Improved Activity and Stability towards the Oxygen Evolution Reaction // Angewandte Chemie International Edition. — 2021. — Vol. 60, № 46. — P. 24612–24619. — URL: https://doi.org/10.1002/anie.202109938
@article{peng2021atomic,
title = {{Atomic Cation‐Vacancy Engineering of NiFe‐Layered Double Hydroxides for Improved Activity and Stability towards the Oxygen Evolution Reaction}},
author = {Lishan Peng and Na Yang and Yuqi Yang and Qing Wang and Xiaoying Xie and Dongxiao Sun‐Waterhouse and Lu Shang and Tierui Zhang and Geoffrey I. N. Waterhouse},
journal = {Angewandte Chemie International Edition},
year = {2021},
volume = {60},
number = {46},
pages = {24612--24619},
doi = {10.1002/anie.202109938},
url = {https://doi.org/10.1002/anie.202109938}
}TY - JOUR AU - Peng, Lishan AU - Yang, Na AU - Yang, Yuqi AU - Wang, Qing AU - Xie, Xiaoying AU - Sun‐Waterhouse, Dongxiao AU - Shang, Lu AU - Zhang, Tierui AU - Waterhouse, Geoffrey I. N. TI - Atomic Cation‐Vacancy Engineering of NiFe‐Layered Double Hydroxides for Improved Activity and Stability towards the Oxygen Evolution Reaction JO - Angewandte Chemie International Edition VL - 60 IS - 46 SP - 24612 EP - 24619 PY - 2021 DA - 2021/09/15 DO - 10.1002/anie.202109938 UR - https://doi.org/10.1002/anie.202109938 ER -
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