Atomically dispersed intrinsic hollow sites of M-M₁-M (M₁ = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr nanocrystals enabling rapid water redox
Fabrication of advanced electrocatalysts acting as an electrode for simultaneous hydrogen and oxygen evolution reactions (i.e., HER and OER) in an overall cell has attracted massive attention but still faces enormous challenges. This study reports a significant strategy for the rapid synthesis of hi...
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sg-ntu-dr.10356-1624902022-10-25T05:31:48Z Atomically dispersed intrinsic hollow sites of M-M₁-M (M₁ = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr nanocrystals enabling rapid water redox Lu, Yu Huang, Kang Cao, Xun Zhang, Liyin Wang, Tian Peng, Dongdong Zhang, Bowei Liu, Zheng Wu, Junsheng Zhang, Yong Chen, Chenjin Huang, Yizhong School of Materials Science and Engineering Engineering::Materials Bifunctional Electrocatalyst High Entropy Alloy Fabrication of advanced electrocatalysts acting as an electrode for simultaneous hydrogen and oxygen evolution reactions (i.e., HER and OER) in an overall cell has attracted massive attention but still faces enormous challenges. This study reports a significant strategy for the rapid synthesis of high-entropy alloys (HEAs) by pulsed laser irradiation. Two types of intrinsic atomic hollow sites over the surface of HEAs are revealed that enable engaging bifunctional activities for water splitting. In this work, a novel senary HEA electrocatalyst made of FeCoNiCuPtIr facilitates the redox of water at only 1.51 V to achieve 10 mA cm−2 and still remains steadily catalytic and durable after being subjected to a 1m KOH solution for more than 20 h. First-principles calculations reveal that the incorporation of Ir and Pt atoms with neighboring elements donate valence electrons to hollow sites weakening the coupling strength between adsorbate and alloy surface and, consequently accelerating both HER and OER. This work delivers a powerful technique to synthesize highly efficient HEA catalysts and unravels the formation mechanism of active sites across the surface of HEA catalysts. Ministry of Education (MOE) The authors gratefully acknowledge the financial support from MOE Tier 1 RG193/17, MOE Tier 1 RG 79/20 (2020-T1-001-045), the Natural Science Foundation of Beijing Municipality (Grant No. 2212037), the National Natural Science Foundation of China (Grant No.51771027), and the Fundamental Research Funds for the Central Universities (Grant No. FRF-AT-20-07). 2022-10-25T05:31:48Z 2022-10-25T05:31:48Z 2022 Journal Article Lu, Y., Huang, K., Cao, X., Zhang, L., Wang, T., Peng, D., Zhang, B., Liu, Z., Wu, J., Zhang, Y., Chen, C. & Huang, Y. (2022). Atomically dispersed intrinsic hollow sites of M-M₁-M (M₁ = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr nanocrystals enabling rapid water redox. Advanced Functional Materials, 32(19), 2110645-. https://dx.doi.org/10.1002/adfm.202110645 1616-301X https://hdl.handle.net/10356/162490 10.1002/adfm.202110645 2-s2.0-85123930764 19 32 2110645 en MOE Tier 1 RG193/17 MOE Tier 1 RG 79/20 (2020-T1-001-045) Advanced Functional Materials © 2022 Wiley-VCH GmbH. All rights reserved. |
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Engineering::Materials Bifunctional Electrocatalyst High Entropy Alloy Lu, Yu Huang, Kang Cao, Xun Zhang, Liyin Wang, Tian Peng, Dongdong Zhang, Bowei Liu, Zheng Wu, Junsheng Zhang, Yong Chen, Chenjin Huang, Yizhong Atomically dispersed intrinsic hollow sites of M-M₁-M (M₁ = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr nanocrystals enabling rapid water redox |
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Fabrication of advanced electrocatalysts acting as an electrode for simultaneous hydrogen and oxygen evolution reactions (i.e., HER and OER) in an overall cell has attracted massive attention but still faces enormous challenges. This study reports a significant strategy for the rapid synthesis of high-entropy alloys (HEAs) by pulsed laser irradiation. Two types of intrinsic atomic hollow sites over the surface of HEAs are revealed that enable engaging bifunctional activities for water splitting. In this work, a novel senary HEA electrocatalyst made of FeCoNiCuPtIr facilitates the redox of water at only 1.51 V to achieve 10 mA cm−2 and still remains steadily catalytic and durable after being subjected to a 1m KOH solution for more than 20 h. First-principles calculations reveal that the incorporation of Ir and Pt atoms with neighboring elements donate valence electrons to hollow sites weakening the coupling strength between adsorbate and alloy surface and, consequently accelerating both HER and OER. This work delivers a powerful technique to synthesize highly efficient HEA catalysts and unravels the formation mechanism of active sites across the surface of HEA catalysts. |
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School of Materials Science and Engineering |
author_facet |
School of Materials Science and Engineering Lu, Yu Huang, Kang Cao, Xun Zhang, Liyin Wang, Tian Peng, Dongdong Zhang, Bowei Liu, Zheng Wu, Junsheng Zhang, Yong Chen, Chenjin Huang, Yizhong |
format |
Article |
author |
Lu, Yu Huang, Kang Cao, Xun Zhang, Liyin Wang, Tian Peng, Dongdong Zhang, Bowei Liu, Zheng Wu, Junsheng Zhang, Yong Chen, Chenjin Huang, Yizhong |
author_sort |
Lu, Yu |
title |
Atomically dispersed intrinsic hollow sites of M-M₁-M (M₁ = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr nanocrystals enabling rapid water redox |
title_short |
Atomically dispersed intrinsic hollow sites of M-M₁-M (M₁ = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr nanocrystals enabling rapid water redox |
title_full |
Atomically dispersed intrinsic hollow sites of M-M₁-M (M₁ = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr nanocrystals enabling rapid water redox |
title_fullStr |
Atomically dispersed intrinsic hollow sites of M-M₁-M (M₁ = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr nanocrystals enabling rapid water redox |
title_full_unstemmed |
Atomically dispersed intrinsic hollow sites of M-M₁-M (M₁ = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr nanocrystals enabling rapid water redox |
title_sort |
atomically dispersed intrinsic hollow sites of m-m₁-m (m₁ = pt, ir; m = fe, co, ni, cu, pt, ir) on feconicuptir nanocrystals enabling rapid water redox |
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2022 |
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https://hdl.handle.net/10356/162490 |
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1749179213356728320 |