Lattice-disordered high-entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction
A disordered crystal structure is an asymmetrical atomic lattice resulting from the missing atoms (vacancies) or the lattice misarrangement in a solid-state material. It has been widely proven to improve the electrocatalytic hydrogen evolution reaction (HER) process. In the present work, due to the...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/179482 |
| _version_ | 1826115866004029440 |
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| author | Huang, Kang Cao, Xun Lu, Yu Xiu, Mingzhen Cui, Kang Zhang, Bowei Shi, Wencong Xia, Jiuyang Woods, Lilia M. Zhu, Siyu Wang, Zheng Guo, Chunxian Li, Changming Liu, Zheng Wu, Junsheng Huang, Yizhong |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Huang, Kang Cao, Xun Lu, Yu Xiu, Mingzhen Cui, Kang Zhang, Bowei Shi, Wencong Xia, Jiuyang Woods, Lilia M. Zhu, Siyu Wang, Zheng Guo, Chunxian Li, Changming Liu, Zheng Wu, Junsheng Huang, Yizhong |
| author_sort | Huang, Kang |
| collection | NTU |
| description | A disordered crystal structure is an asymmetrical atomic lattice resulting from the missing atoms (vacancies) or the lattice misarrangement in a solid-state material. It has been widely proven to improve the electrocatalytic hydrogen evolution reaction (HER) process. In the present work, due to the special physical properties (the low evaporation temperature of below 900 °C), Zn is utilized as a sacrificial component to create senary PtIrNiCoFeZn high-entropy alloy (HEA) with highly disordered lattices. The structure of the lattice-disordered PtIrNiCoFeZn HEA is characterized by the thermal diffusion scattering (TDS) in transmission electron microscope. Density functional theory calculations reveal that lattice disorder not only accelerates both the Volmer step and Tafel step during the HER process but also optimizes the intensity and distribution of projected density of states near the Fermi energy after the H2O and H adsorption. Anomalously high alkaline HER activity and stability are proven by experimental measurements. This work introduces a novel approach to preparing irregular lattices offering highly efficient HEA and a TDS characterization method to reveal the disordered lattice in materials. It provides a new route toward exploring and developing the catalytic activities of materials with asymmetrically disordered lattices. |
| first_indexed | 2024-10-01T04:02:07Z |
| format | Journal Article |
| id | ntu-10356/179482 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:02:07Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1794822024-08-05T01:28:53Z Lattice-disordered high-entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction Huang, Kang Cao, Xun Lu, Yu Xiu, Mingzhen Cui, Kang Zhang, Bowei Shi, Wencong Xia, Jiuyang Woods, Lilia M. Zhu, Siyu Wang, Zheng Guo, Chunxian Li, Changming Liu, Zheng Wu, Junsheng Huang, Yizhong School of Materials Science and Engineering School of Chemistry, Chemical Engineering and Biotechnology Energy Research Institute @ NTU (ERI@N) Engineering High-entropy alloys Hydrogen evolution reaction A disordered crystal structure is an asymmetrical atomic lattice resulting from the missing atoms (vacancies) or the lattice misarrangement in a solid-state material. It has been widely proven to improve the electrocatalytic hydrogen evolution reaction (HER) process. In the present work, due to the special physical properties (the low evaporation temperature of below 900 °C), Zn is utilized as a sacrificial component to create senary PtIrNiCoFeZn high-entropy alloy (HEA) with highly disordered lattices. The structure of the lattice-disordered PtIrNiCoFeZn HEA is characterized by the thermal diffusion scattering (TDS) in transmission electron microscope. Density functional theory calculations reveal that lattice disorder not only accelerates both the Volmer step and Tafel step during the HER process but also optimizes the intensity and distribution of projected density of states near the Fermi energy after the H2O and H adsorption. Anomalously high alkaline HER activity and stability are proven by experimental measurements. This work introduces a novel approach to preparing irregular lattices offering highly efficient HEA and a TDS characterization method to reveal the disordered lattice in materials. It provides a new route toward exploring and developing the catalytic activities of materials with asymmetrically disordered lattices. Ministry of Education (MOE) This work was supported by the Natural Science Foundation of Beijing Municipality (Grant No. 2212037), the National Natural Science Foundation of China (Grant Nos. 51771027, 51901018, and 21676216), the Fundamental Research Funds for the Central Universities(Grant No. FRF-AT-20-07), the National Science and Technology Resources Investigation Pro-gram of China (Grant No. 2019FY101400), Young Elite Scientists Sponsorship Program by China Association for Science and Technology (YESS,2019QNRC001), and Singapore MOE AcRF Tier 1 grant RG79/20. 2024-08-05T01:28:53Z 2024-08-05T01:28:53Z 2024 Journal Article Huang, K., Cao, X., Lu, Y., Xiu, M., Cui, K., Zhang, B., Shi, W., Xia, J., Woods, L. M., Zhu, S., Wang, Z., Guo, C., Li, C., Liu, Z., Wu, J. & Huang, Y. (2024). Lattice-disordered high-entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction. Advanced Materials, e2304867-. https://dx.doi.org/10.1002/adma.202304867 0935-9648 https://hdl.handle.net/10356/179482 10.1002/adma.202304867 38837502 2-s2.0-85195491159 e2304867 en RG79/20 Advanced Materials © 2024 Wiley-VCH GmbH. All rights reserved. |
| spellingShingle | Engineering High-entropy alloys Hydrogen evolution reaction Huang, Kang Cao, Xun Lu, Yu Xiu, Mingzhen Cui, Kang Zhang, Bowei Shi, Wencong Xia, Jiuyang Woods, Lilia M. Zhu, Siyu Wang, Zheng Guo, Chunxian Li, Changming Liu, Zheng Wu, Junsheng Huang, Yizhong Lattice-disordered high-entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction |
| title | Lattice-disordered high-entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction |
| title_full | Lattice-disordered high-entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction |
| title_fullStr | Lattice-disordered high-entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction |
| title_full_unstemmed | Lattice-disordered high-entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction |
| title_short | Lattice-disordered high-entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction |
| title_sort | lattice disordered high entropy alloy engineered by thermal dezincification for improved catalytic hydrogen evolution reaction |
| topic | Engineering High-entropy alloys Hydrogen evolution reaction |
| url | https://hdl.handle.net/10356/179482 |
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