Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/88887
Title: Crystal phase and architecture engineering of lotus thalamus-shaped Pt-Ni anisotropic superstructures for highly efficient electrochemical hydrogen evolution
Authors: 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
Keywords: Crystal Structures
Anisotropic Structures
DRNTU::Engineering::Materials
Issue Date: 2018
Source: 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
Series/Report no.: Advanced Materials
Abstract: 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.
URI: https://hdl.handle.net/10356/88887
http://hdl.handle.net/10220/48902
ISSN: 0935-9648
DOI: https://dx.doi.org/10.1002/adma.201801741
Rights: 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.
metadata.item.grantfulltext: open
metadata.item.fulltext: With Fulltext
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