Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/152526
Title: Engineering platinum-cobalt nano-alloys in porous nitrogen-doped carbon nanotubes for highly efficient electrocatalytic hydrogen evolution
Authors: Zhang, Song Lin
Lu, Xue Feng
Wu, Zhi-Peng
Luan, Deyan
Lou, David Xiong Wen
Keywords: Engineering::Chemical engineering
Issue Date: 2021
Source: Zhang, S. L., Lu, X. F., Wu, Z., Luan, D. & Lou, D. X. W. (2021). Engineering platinum-cobalt nano-alloys in porous nitrogen-doped carbon nanotubes for highly efficient electrocatalytic hydrogen evolution. Angewandte Chemie International Edition, 60(35), 19068-19073. https://dx.doi.org/10.1002/anie.202106547
Project: NRF-NRFI2016-04
MOE2019-T2-2-049
Journal: Angewandte Chemie International edition
Abstract: Highly efficient electrocatalysts are essential for the production of green hydrogen from water electrolysis. Herein, a metal-organic framework-assisted pyrolysis-replacement-reorganization approach is developed to obtain ultrafine Pt-Co alloy nanoparticles (sub-10 nm) attached on the inner and outer shells of porous nitrogen-doped carbon nanotubes (NCNT) with closed ends. During the thermal reorganization, the migration of Pt-Co nano-alloys to both surfaces ensures the maximized exposure of active sites while maintaining the robust attachment to the porous carbon matrix. Density functional theory calculations suggest a nearly thermodynamically-neutral free energy of adsorption for hydrogen intermediates and diversified active sites induced by alloying, thus resulting in a great promotion in intrinsic activity towards the hydrogen evolution reaction (HER). Benefiting from the delicate structural design and compositional modulation, the optimized Pt3 Co@NCNT electrocatalyst manifests outstanding HER activity and superior stability in both acidic and alkaline media.
URI: https://hdl.handle.net/10356/152526
ISSN: 1433-7851
DOI: 10.1002/anie.202106547
Rights: This is the peer reviewed version of the following article: Zhang, S. L., Lu, X. F., Wu, Z., Luan, D. & Lou, D. X. W. (2021). Engineering platinum-cobalt nano-alloys in porous nitrogen-doped carbon nanotubes for highly efficient electrocatalytic hydrogen evolution. Angewandte Chemie International Edition, 60(35), 19068-19073, which has been published in final form at https://doi.org/10.1002/anie.202106547. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions
Fulltext Permission: embargo_20220831
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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  Until 2022-08-31
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