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Guang Hong Feng, Fanghua Ning, Song Jin, Huaifang Shang, Kun Zhang, Zhengping Ding, Peng Gao, Wangsheng Chu, Dingguo Xia
The development of sufficiently effective catalysts with extremely superior performance for electrocatalytic hydrogen production still remains a formidable challenge, especially in acidic media. Here, we report ultrasmall high-entropy alloy (us-HEA) nanoparticles (NPs) with the best-level performance for hydrogen evolution reaction (HER). The us-HEA (NiCoFePtRh) NPs show an average diameter of 1.68 nm, which is the smallest size in the reported HEAs. The atomic structure, coordinational structure, and electronic structure of the us-HEAs were comprehensively clarified. The us-HEA/C achieves an ultrahigh mass activity of 28.3 A mg –1 noble metals at −0.05 V (vs the reversible hydrogen electrode, RHE) for HER in 0.5 M H 2 SO 4 solution, which is 40.4 and 74.5 times higher than those of the commercial Pt/C and Rh/C catalysts, respectively. Moreover, the us-HEA/C demonstrates an ultrahigh turnover frequency of 30.1 s –1 at 50 mV overpotential (41.8 times higher than that of the Pt/C catalyst) and excellent stability with no decay after 10 000 cycles. Operando X-ray absorption spectroscopy and theoretical calculations reveal the actual active sites, tunable electronic structures, and a synergistic effect among five elements, which endow significantly enhanced HER activity. This work not only engineers a general and scalable strategy for synthesizing us-HEA NPs and elucidates the complex structural information and catalytic mechanisms of multielement HEA system in depth, but also highlights HEAs as sufficiently advanced catalysts and accelerates the research of HEAs in energy-related applications.
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Feng, G. H., Ning, F., Jin, S., Shang, H., Zhang, K., Ding, Z., Gao, P., Chu, W., & Xia, D. (2021). Sub-2 nm Ultrasmall High-Entropy Alloy Nanoparticles for Extremely Superior Electrocatalytic Hydrogen Evolution. Journal of the American Chemical Society, 143(41), 17117–17127. https://doi.org/10.1021/jacs.1c07643
Feng, Guang Hong, et al. "Sub-2 nm Ultrasmall High-Entropy Alloy Nanoparticles for Extremely Superior Electrocatalytic Hydrogen Evolution." Journal of the American Chemical Society, vol. 143, no. 41, 2021, pp. 17117–17127, https://doi.org/10.1021/jacs.1c07643.
Feng, Guang Hong, Fanghua Ning, Song Jin, Huaifang Shang, Kun Zhang, Zhengping Ding, Peng Gao, Wangsheng Chu, and Dingguo Xia. "Sub-2 nm Ultrasmall High-Entropy Alloy Nanoparticles for Extremely Superior Electrocatalytic Hydrogen Evolution." Journal of the American Chemical Society 143, no. 41 (2021): 17117–17127. https://doi.org/10.1021/jacs.1c07643.
Feng G. H., Ning F., Jin S. [и др.] Sub-2 nm Ultrasmall High-Entropy Alloy Nanoparticles for Extremely Superior Electrocatalytic Hydrogen Evolution // Journal of the American Chemical Society. — 2021. — Vol. 143, № 41. — P. 17117–17127. — URL: https://doi.org/10.1021/jacs.1c07643
@article{feng2021ultrasmall,
title = {{Sub-2 nm Ultrasmall High-Entropy Alloy Nanoparticles for Extremely Superior Electrocatalytic Hydrogen Evolution}},
author = {Guang Hong Feng and Fanghua Ning and Song Jin and Huaifang Shang and Kun Zhang and Zhengping Ding and Peng Gao and Wangsheng Chu and Dingguo Xia},
journal = {Journal of the American Chemical Society},
year = {2021},
volume = {143},
number = {41},
pages = {17117--17127},
doi = {10.1021/jacs.1c07643},
url = {https://doi.org/10.1021/jacs.1c07643}
}TY - JOUR AU - Feng, Guang Hong AU - Ning, Fanghua AU - Jin, Song AU - Shang, Huaifang AU - Zhang, Kun AU - Ding, Zhengping AU - Gao, Peng AU - Chu, Wangsheng AU - Xia, Dingguo TI - Sub-2 nm Ultrasmall High-Entropy Alloy Nanoparticles for Extremely Superior Electrocatalytic Hydrogen Evolution JO - Journal of the American Chemical Society VL - 143 IS - 41 SP - 17117 EP - 17127 PY - 2021 DA - 2021/09/23 DO - 10.1021/jacs.1c07643 UR - https://doi.org/10.1021/jacs.1c07643 ER -
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