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    Strain stabilized nickel hydroxide nanoribbons for efficient water splitting

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    Type
    Article
    Authors
    Wang, X. P.
    Wu, H. J. cc
    Xi, S. B.
    Lee, W. S.V.
    Zhang, J.
    Wu, Z. H. cc
    Wang, J. O.
    Hu, T. D.
    Liu, L. M. cc
    Han, Yu cc
    Chee, S. W.
    Ning, S. C.
    Mirsaidov, U. cc
    Wang, Z. B.
    Zhang, Y. W. cc
    Borgna, A. cc
    Wang, J. cc
    Du, Y. H.
    Yu, Z. G. cc
    Pennycook, S. J. cc
    Xue, J. M. cc
    KAUST Department
    Advanced Membranes and Porous Materials Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia
    Date
    2020
    Embargo End Date
    2020-11-21
    Submitted Date
    2019-08-09
    Permanent link to this record
    http://hdl.handle.net/10754/661408
    
    Metadata
    Show full item record
    Abstract
    Development of efficient and durable oxygen evolution reaction (OER) catalysts has a direct impact on the water splitting efficiency and cost effectiveness. In this work, we report the successful synthesis of a new Ni(OH)2 structure, strain-stabilized Ni(OH)2 nanoribbons (NR-Ni(OH)2) two to three layers thick, with widths of 2-5 nm, via an electro-oxidation route. Conventional Ni(OH)2 usually has negligible OER activity, while NR-Ni(OH)2 shows high activity for the oxygen evolution reaction and an overpotential of 162 millivolts and furthermore exhibits long-term stability in alkaline electrolyte. The substantial reduction in the overpotential of NR-Ni(OH)2 is due to its easier OOH∗ adsorption by the active four-coordinated Ni edge sites. The enhanced catalytic activity of NR-Ni(OH)2 makes it an excellent candidate for industrial applications.
    Citation
    Wang, X. P., Wu, H. J., Xi, S. B., Lee, W. S. V., Zhang, J., Wu, Z. H., … Xue, J. M. (2020). Strain stabilized nickel hydroxide nanoribbons for efficient water splitting. Energy & Environmental Science, 13(1), 229–237. doi:10.1039/c9ee02565k
    Sponsors
    This work is financially supported by Singapore MOE Tier 1 R284000162114, Singapore NRF CRP funding R284000159281, and the Agency for Science, Technology and Research (A*STAR) of Singapore This research is also supported by A*STAR with a Grant No. of 152-70-00017 and computational resources were provided by National Supercomputing Centre Singapore (NSCC) and A*STAR Computational Resource Centre, Singapore (A*CRC). This project was partly supported by the Science and Engineering Research Council (SERC) of A*STAR of Singapore. Yonghua Du thanks the National Natural Science Foundation of China for support (11528510). The XAFCA beamline at SSLS, and 1W1B, 4W2, 4B9A, 1W1A, 4B9B, 1W2A and 4B7B beamlines of BSRF are gratefully acknowledged for providing beam time to support this project. The authors also thank the Center for Bioimaging Center of National University of Singapore for the use of facilities. The authors are grateful to Dr Lirong Zheng, Xiaodong Chen, Yunpeng Liu, Yu Chen, Shengqi Chu, Guang Mo, Shuhu Liu, Zhihong Li and Ping Yang for assistance and helpful discussion in the synchrotron radiation characterization, and to Dr Jia Zhang and Poh Chee Kok for contributions to the DFT calculations.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Energy and Environmental Science
    DOI
    10.1039/c9ee02565k
    Additional Links
    http://xlink.rsc.org/?DOI=C9EE02565K
    ae974a485f413a2113503eed53cd6c53
    10.1039/c9ee02565k
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