UM
In Situ Grown Epitaxial Heterojunction Exhibits High-Performance Electrocatalytic Water Splitting
Zhu C.1; Wang A.-L.1; Xiao W.2; Chao D.1; Zhang X.1; Tiep N.H.1; Chen S.1; Kang J.1; Wang X.1; Ding J.2; Wang J.2; Zhang H.1; Fan H.J.1
2018-03-27
Source PublicationAdvanced Materials
ISSN15214095 09359648
Volume30Issue:13
AbstractElectrocatalytic 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-Ni N nanowires array is devised, where a nanoconfinement effect is reinforced at the interface. The Co-Ni N heterostructure array is formed by thermal annealing NiCo O precursor nanowires under an optimized condition, during which the nanowire morphology is retained. The epitaxial in-growth structure of Co-Ni N 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 Ni N-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.
Keywordepitaxial in-growth hydrogen evolution reaction metal nitride arrays nanoconfinement oxygen evolution reaction
DOI10.1002/adma.201705516
URLView the original
Language英語
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Cited Times [WOS]:81   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Nanyang Technological University
2.National University of Singapore
Recommended Citation
GB/T 7714
Zhu C.,Wang A.-L.,Xiao W.,et al. In Situ Grown Epitaxial Heterojunction Exhibits High-Performance Electrocatalytic Water Splitting[J]. Advanced Materials,2018,30(13).
APA Zhu C..,Wang A.-L..,Xiao W..,Chao D..,Zhang X..,...&Fan H.J..(2018).In Situ Grown Epitaxial Heterojunction Exhibits High-Performance Electrocatalytic Water Splitting.Advanced Materials,30(13).
MLA Zhu C.,et al."In Situ Grown Epitaxial Heterojunction Exhibits High-Performance Electrocatalytic Water Splitting".Advanced Materials 30.13(2018).
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