Microwave-irradiated ultrafast synthesis of NiSnPdPtRh high-entropy alloy nanorods for high-efficiency electrocatalytic hydrogen evolution reaction
- 1Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-Central Minzu University Wuhan 430074 China [email protected].
- 2School of Environment and Energy, South China University of Technology Guangzhou 510006 China [email protected].
- 3State Key Laboratory of Advanced Papermaking and Paper-based Materials, School of Light Industry and Engineering, South China University of Technology Guangzhou 510640 China.
Abstract
Uniform and well-defined NiSnPdPtRh high-entropy alloy nanorods (HEA NRs) are successfully prepared by a one-pot microwave-irradiated strategy within 180 s. The growth mechanism involves simultaneous reduction of metal precursors, linear assembly of nanoclusters, and Ostwald ripening, with Sn and Pd playing critical roles in directing the anisotropic growth. After carbon-supported thermal treatment at 200 °C, the as-prepared NiSnPdPtRh@C-200 NRs exhibit exceptional electrocatalytic performance for acidic HER, achieving an ultra-low overpotential of 8.39 mV at 10 mA cm⁻², a very low Tafel slope of 7.92 mV dec⁻¹, and a high noble metal mass activity of 2564 A g⁻¹. Even at an industrial-level current density of 2000 mA cm⁻², an overpotential of only 196.5 mV is required. When deployed in a proton exchange membrane water electrolyzer (PEMWE), NiSnPdPtRh@C-200 NRs exhibit a low cell voltage of merely 1.85 and 1.98 V at 1.0 and 1.5 A cm⁻², respectively, and display an extremely low voltage decay of just 12.19 µV h⁻¹ after operating for 2000 h at 500 mA cm⁻². DFT calculations reveal that Pt-Pt-Rh and Ni-Pt-Pd hollow sites serve as synergistic active centres, facilitating efficient HER kinetics via a Tafel mechanism. This work provides a simple, rapid synthesis strategy for HEA nanocrystals as high-efficiency HER electrocatalysts.
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BibTeX
@article{fang2026microwaveirradiated,
title = {{Microwave-irradiated ultrafast synthesis of NiSnPdPtRh high-entropy alloy nanorods for high-efficiency electrocatalytic hydrogen evolution reaction}},
author = {Yuan Fang and Siyuan Lai and Mairui Long and Keying Xing and Yanfang Wu and Junli Ren and Zhan Zhang and Wei Keat Ng and Tao Huang and Xiongwu Kang},
journal = {Chemical science},
year = {2026},
month = oct,
doi = {10.1039/d6sc06688g},
url = {https://europepmc.org/article/PMC/PMC13717512},
note = {CC BY},
}
RIS
TY - JOUR
TI - Microwave-irradiated ultrafast synthesis of NiSnPdPtRh high-entropy alloy nanorods for high-efficiency electrocatalytic hydrogen evolution reaction
AU - Yuan Fang
AU - Siyuan Lai
AU - Mairui Long
AU - Keying Xing
AU - Yanfang Wu
AU - Junli Ren
AU - Zhan Zhang
AU - Wei Keat Ng
AU - Tao Huang
AU - Xiongwu Kang
PY - 2026
DA - 2026/10/22
JO - Chemical science
DO - 10.1039/d6sc06688g
UR - https://europepmc.org/article/PMC/PMC13717512
AB - Uniform and well-defined NiSnPdPtRh high-entropy alloy nanorods (HEA NRs) are successfully prepared by a one-pot microwave-irradiated strategy within 180 s. The growth mechanism involves simultaneous reduction of metal precursors, linear assembly of nanoclusters, and Ostwald ripening, with Sn and Pd playing critical roles in directing the anisotropic growth. After carbon-supported thermal treatment at 200 °C, the as-prepared NiSnPdPtRh@C-200 NRs exhibit exceptional electrocatalytic performance for acidic HER, achieving an ultra-low overpotential of 8.39 mV at 10 mA cm⁻², a very low Tafel slope of 7.92 mV dec⁻¹, and a high noble metal mass activity of 2564 A g⁻¹. Even at an industrial-level current density of 2000 mA cm⁻², an overpotential of only 196.5 mV is required. When deployed in a proton exchange membrane water electrolyzer (PEMWE), NiSnPdPtRh@C-200 NRs exhibit a low cell voltage of merely 1.85 and 1.98 V at 1.0 and 1.5 A cm⁻², respectively, and display an extremely low voltage decay of just 12.19 µV h⁻¹ after operating for 2000 h at 500 mA cm⁻². DFT calculations reveal that Pt-Pt-Rh and Ni-Pt-Pd hollow sites serve as synergistic active centres, facilitating efficient HER kinetics via a Tafel mechanism. This work provides a simple, rapid synthesis strategy for HEA nanocrystals as high-efficiency HER electrocatalysts.
SN - 2041-6520
SN - 2041-6539
ER -