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Jiayuan Li, Jun Hu, Mingkai Zhang, Wangyan Gou, Sai Mei Zhang, Zhong Chen, Yongquan Qu, Yuanyuan Ma
Hydrogen spillover phenomenon of metal-supported electrocatalysts can significantly impact their activity in hydrogen evolution reaction (HER). However, design of active electrocatalysts faces grand challenges due to the insufficient understandings on how to overcome this thermodynamically and kinetically adverse process. Here we theoretically profile that the interfacial charge accumulation induces by the large work function difference between metal and support (∆Φ) and sequentially strong interfacial proton adsorption construct a high energy barrier for hydrogen transfer. Theoretical simulations and control experiments rationalize that small ∆Φ induces interfacial charge dilution and relocation, thereby weakening interfacial proton adsorption and enabling efficient hydrogen spillover for HER. Experimentally, a series of Pt alloys-CoP catalysts with tailorable ∆Φ show a strong ∆Φ-dependent HER activity, in which PtIr/CoP with the smallest ∆Φ = 0.02 eV delivers the best HER performance. These findings have conclusively identified ∆Φ as the criterion in guiding the design of hydrogen spillover-based binary HER electrocatalysts.
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Li, J., Hu, J., Zhang, M., Gou, W., Zhang, S. M., Chen, Z., Qu, Y., & Ma, Y. (2021). A fundamental viewpoint on the hydrogen spillover phenomenon of electrocatalytic hydrogen evolution. Nature Communications, 12(1), 3502. https://doi.org/10.1038/s41467-021-23750-4
Li, Jiayuan, et al. "A fundamental viewpoint on the hydrogen spillover phenomenon of electrocatalytic hydrogen evolution." Nature Communications, vol. 12, no. 1, 2021, pp. 3502, https://doi.org/10.1038/s41467-021-23750-4.
Li, Jiayuan, Jun Hu, Mingkai Zhang, Wangyan Gou, Sai Mei Zhang, Zhong Chen, Yongquan Qu, and Yuanyuan Ma. "A fundamental viewpoint on the hydrogen spillover phenomenon of electrocatalytic hydrogen evolution." Nature Communications 12, no. 1 (2021): 3502. https://doi.org/10.1038/s41467-021-23750-4.
Li J., Hu J., Zhang M. [и др.] A fundamental viewpoint on the hydrogen spillover phenomenon of electrocatalytic hydrogen evolution // Nature Communications. — 2021. — Vol. 12, № 1. — P. 3502. — URL: https://doi.org/10.1038/s41467-021-23750-4
@article{li2021fundamental,
title = {{A fundamental viewpoint on the hydrogen spillover phenomenon of electrocatalytic hydrogen evolution}},
author = {Jiayuan Li and Jun Hu and Mingkai Zhang and Wangyan Gou and Sai Mei Zhang and Zhong Chen and Yongquan Qu and Yuanyuan Ma},
journal = {Nature Communications},
year = {2021},
volume = {12},
number = {1},
pages = {3502},
doi = {10.1038/s41467-021-23750-4},
url = {https://doi.org/10.1038/s41467-021-23750-4}
}TY - JOUR AU - Li, Jiayuan AU - Hu, Jun AU - Zhang, Mingkai AU - Gou, Wangyan AU - Zhang, Sai Mei AU - Chen, Zhong AU - Qu, Yongquan AU - Ma, Yuanyuan TI - A fundamental viewpoint on the hydrogen spillover phenomenon of electrocatalytic hydrogen evolution JO - Nature Communications VL - 12 IS - 1 SP - 3502 PY - 2021 DA - 2021/06/09 DO - 10.1038/s41467-021-23750-4 UR - https://doi.org/10.1038/s41467-021-23750-4 ER -
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