Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/93043
Title: In situ grown epitaxial heterojunction exhibits high-performance electrocatalytic water splitting
Authors: Zhu, Changrong
Wang, An-Liang
Xiao, Wen
Chao, Dongliang
Zhang, Xiao
Tiep, Nguyen Huy
Chen, Shi
Kang, Jiani
Wang, Xin
Ding, Jun
Wang, John
Zhang, Hua
Fan, Hong Jin
Keywords: DRNTU::Science::Physics
Nanoconfinement
Metal Nitride Nanoarrays
Issue Date: 2018
Source: Zhu, C., Wang, A.-L., Xiao, W., Chao, D., Zhang, X., Tiep, N. H., … Fan, H. J. (2018). In situ grown epitaxial heterojunction exhibits high-performance electrocatalytic water splitting. Advanced Materials, 30(13), 1705516-. doi:10.1002/adma.201705516
Series/Report no.: Advanced Materials
Abstract: Electrocatalytic performance can be enhanced by engineering a purposely designed nanoheterojunction and fine‐tuning the interface electronic structure. Herein a new approach of developing atomic epitaxial in‐growth in Co‐Ni3N nanowires array is devised, where a nanoconfinement effect is reinforced at the interface. The Co‐Ni3N heterostructure array is formed by thermal annealing NiCo2O4 precursor nanowires under an optimized condition, during which the nanowire morphology is retained. The epitaxial in‐growth structure of Co‐Ni3N at nanometer scale facilitates the electron transfer between the two different domains at the epitaxial interface, leading to a significant enhancement in catalytic activities for both hydrogen and oxygen evolution reactions (10 and 16 times higher in the respective turn‐over frequency compared to Ni3N‐alone nanorods). The interface transfer effect is verified by electronic binding energy shift and density functional theory (DFT) calculations. This nanoconfinement effect occurring during in situ atomic epitaxial in‐growth of the two compatible materials shows an effective pathway toward high‐performance electrocatalysis and energy storages.
URI: https://hdl.handle.net/10356/93043
http://hdl.handle.net/10220/48859
ISSN: 0935-9648
DOI: 10.1002/adma.201705516
Rights: This is the peer reviewed version of the following article: Zhu, C., Wang, A.-L., Xiao, W., Chao, D., Zhang, X., Tiep, N. H., … Fan, H. J. (2018). In situ grown epitaxial heterojunction exhibits high-performance electrocatalytic water splitting. Advanced Materials, 30(13), 1705516-. doi:10.1002/adma.201705516, which has been published in final form at http://dx.doi.org/10.1002/adma.201705516. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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