Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/151707
Title: | Breaking the symmetry : gradient in NiFe layered double hydroxide nanoarrays for efficient oxygen evolution | Authors: | Zhou, Daojin Jia, Yin Duan, Xinxuan Tang, Jialun Xu, Jie Liu, Dong Xiong, Xuya Zhang, Junming Luo, Jun Zheng, Lirong Liu, Bin Kuang, Yun Sun, Xiaoming Duan, Xue |
Keywords: | Engineering::Chemical engineering | Issue Date: | 2019 | Source: | Zhou, D., Jia, Y., Duan, X., Tang, J., Xu, J., Liu, D., Xiong, X., Zhang, J., Luo, J., Zheng, L., Liu, B., Kuang, Y., Sun, X. & Duan, X. (2019). Breaking the symmetry : gradient in NiFe layered double hydroxide nanoarrays for efficient oxygen evolution. Nano Energy, 60, 661-666. https://dx.doi.org/10.1016/j.nanoen.2019.04.014 | Project: | RG10/16 RG9/17 RG115/17 MOE2016-T2-2-004 |
Journal: | Nano Energy | Abstract: | Breaking the symmetry in catalysts through interface engineering has emerged as a new dimension in enhancing the catalytic performances, while the long-range asymmetry (i.e. in nanometer scale) in catalysts can hardly be achieved by alloying or doping. Herein, we introduce asymmetrical gradient effect into NiFe layered double hydroxide (NiFe-LDH) at nano scale via a simple nanoarray construction strategy on Ni foam substrate. The electron energy loss spectroscopy, extended X-Ray absorption fine structure and other characterizations together revealed the concentration and valence states gradients in NiFe-LDH nanoarrays. Subsequently, the gradient effect leads to distinctly optimized binding strength of active sites to oxygen evolution intermediates, better electron transfers and boosted oxygen evolution performances, which are absent in non-gradient NiFe-LDH catalysts. Such long-range gradient effects in nanoarray materials provide new opportunities to understand their boosted catalytic performances and to rationally design better catalytic materials. | URI: | https://hdl.handle.net/10356/151707 | ISSN: | 2211-2855 | DOI: | 10.1016/j.nanoen.2019.04.014 | Schools: | School of Chemical and Biomedical Engineering | Rights: | © 2019 Elsevier Ltd. All rights reserved. | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | SCBE Journal Articles |
SCOPUSTM
Citations
10
49
Updated on Mar 24, 2024
Web of ScienceTM
Citations
10
48
Updated on Oct 26, 2023
Page view(s)
321
Updated on Mar 29, 2024
Google ScholarTM
Check
Altmetric
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.