Crystal phase and architecture engineering of lotus thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution
The rational design and synthesis of anisotropic 3D nanostructures with specific composition, morphology, surface structure, and crystal phase is of significant importance for their diverse applications. Here, the synthesis of well‐crystalline lotus‐thalamus‐shaped Pt‐Ni anisotropic superstructures...
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sg-ntu-dr.10356-888872023-07-14T15:57:06Z Crystal phase and architecture engineering of lotus thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution Zhang, Zhicheng Liu, Guigao Cui, Xiaoya Chen, Bo Zhu, Yihan Gong, Yue Saleem, Faisal Xi, Shibo Du, Yonghua Borgna, Armando Lai, Zhuangchai Zhang, Qinghua Li, Bing Zong, Yun Han, Yu Gu, Lin Zhang, Hua School of Materials Science & Engineering Crystal Structures Anisotropic Structures DRNTU::Engineering::Materials The rational design and synthesis of anisotropic 3D nanostructures with specific composition, morphology, surface structure, and crystal phase is of significant importance for their diverse applications. Here, the synthesis of well‐crystalline lotus‐thalamus‐shaped Pt‐Ni anisotropic superstructures (ASs) via a facile one‐pot solvothermal method is reported. The Pt‐Ni ASs with Pt‐rich surface are composed of one Ni‐rich “core” with face‐centered cubic (fcc) phase, Ni‐rich “arms” with hexagonal close‐packed phase protruding from the core, and facet‐selectively grown Pt‐rich “lotus seeds” with fcc phase on the end surfaces of the “arms.” Impressively, these unique Pt‐Ni ASs exhibit superior electrocatalytic activity and stability toward the hydrogen evolution reaction under alkaline conditions compared to commercial Pt/C and previously reported electrocatalysts. The obtained overpotential is as low as 27.7 mV at current density of 10 mA cm−2, and the turnover frequency reaches 18.63 H2 s−1 at the overpotential of 50 mV. This work provides a new strategy for the synthesis of highly anisotropic superstructures with a spatial heterogeneity to boost their promising application in catalytic reactions. ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) Accepted version 2019-06-21T04:39:20Z 2019-12-06T17:13:06Z 2019-06-21T04:39:20Z 2019-12-06T17:13:06Z 2018 2018 Journal Article Zhang, Z., Liu, G., Cui, X., Chen, B., Zhu, Y., Gong, Y., ...Zhang, H. (2018). Crystal phase and architecture engineering of lotus-thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution. Advanced Materials, 30(30), 1801741-. doi:10.1002/adma.201801741 0935-9648 https://hdl.handle.net/10356/88887 http://hdl.handle.net/10220/48902 10.1002/adma.201801741 207353 en Advanced Materials This is the peer reviewed version of the following article: Zhang, Z., Liu, G., Cui, X., Chen, B., Zhu, Y., Gong, Y., ...Zhang, H. (2018). Crystal phase and architecture engineering of lotus-thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution. Advanced Materials, 30(30), 1801741-. doi:10.1002/adma.201801741, which has been published in final form at https://dx.doi.org/10.1002/adma.201801741. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. 18 p. application/pdf |
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Crystal Structures Anisotropic Structures DRNTU::Engineering::Materials Zhang, Zhicheng Liu, Guigao Cui, Xiaoya Chen, Bo Zhu, Yihan Gong, Yue Saleem, Faisal Xi, Shibo Du, Yonghua Borgna, Armando Lai, Zhuangchai Zhang, Qinghua Li, Bing Zong, Yun Han, Yu Gu, Lin Zhang, Hua Crystal phase and architecture engineering of lotus thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution |
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The rational design and synthesis of anisotropic 3D nanostructures with specific composition, morphology, surface structure, and crystal phase is of significant importance for their diverse applications. Here, the synthesis of well‐crystalline lotus‐thalamus‐shaped Pt‐Ni anisotropic superstructures (ASs) via a facile one‐pot solvothermal method is reported. The Pt‐Ni ASs with Pt‐rich surface are composed of one Ni‐rich “core” with face‐centered cubic (fcc) phase, Ni‐rich “arms” with hexagonal close‐packed phase protruding from the core, and facet‐selectively grown Pt‐rich “lotus seeds” with fcc phase on the end surfaces of the “arms.” Impressively, these unique Pt‐Ni ASs exhibit superior electrocatalytic activity and stability toward the hydrogen evolution reaction under alkaline conditions compared to commercial Pt/C and previously reported electrocatalysts. The obtained overpotential is as low as 27.7 mV at current density of 10 mA cm−2, and the turnover frequency reaches 18.63 H2 s−1 at the overpotential of 50 mV. This work provides a new strategy for the synthesis of highly anisotropic superstructures with a spatial heterogeneity to boost their promising application in catalytic reactions. |
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School of Materials Science & Engineering |
author_facet |
School of Materials Science & Engineering Zhang, Zhicheng Liu, Guigao Cui, Xiaoya Chen, Bo Zhu, Yihan Gong, Yue Saleem, Faisal Xi, Shibo Du, Yonghua Borgna, Armando Lai, Zhuangchai Zhang, Qinghua Li, Bing Zong, Yun Han, Yu Gu, Lin Zhang, Hua |
format |
Article |
author |
Zhang, Zhicheng Liu, Guigao Cui, Xiaoya Chen, Bo Zhu, Yihan Gong, Yue Saleem, Faisal Xi, Shibo Du, Yonghua Borgna, Armando Lai, Zhuangchai Zhang, Qinghua Li, Bing Zong, Yun Han, Yu Gu, Lin Zhang, Hua |
author_sort |
Zhang, Zhicheng |
title |
Crystal phase and architecture engineering of lotus thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution |
title_short |
Crystal phase and architecture engineering of lotus thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution |
title_full |
Crystal phase and architecture engineering of lotus thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution |
title_fullStr |
Crystal phase and architecture engineering of lotus thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution |
title_full_unstemmed |
Crystal phase and architecture engineering of lotus thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution |
title_sort |
crystal phase and architecture engineering of lotus thalamus-shaped pt-ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution |
publishDate |
2019 |
url |
https://hdl.handle.net/10356/88887 http://hdl.handle.net/10220/48902 |
_version_ |
1773551415352885248 |