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    Atomic H-Induced Mo2C Hybrid as an Active and Stable Bifunctional Electrocatalyst

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    Author
    Fan, Xiujun; Liu, Yuanyue; Peng, Zhiwei; Zhang, Zhenhua; Zhou, Haiqing; More... Zhang, Xianming; Yakobson, Boris I.; Goddard, William A. III; Guo, Xia; Hauge, Robert H.; Tour, James M. Less...
    Date
    2017
    Abstract
    Mo2C nanocrystals (NCs) anchored on vertically aligned graphene nanoribbons (VA-GNR) as hybrid nanoelectrocatalysts (Mo2C–GNR) are synthesized through the direct carbonization of metallic Mo with atomic H treatment. The growth mechanism of Mo2C NCs with atomic H treatment is discussed. The Mo2C–GNR hybrid exhibits highly active and durable electrocatalytic performance for the hydrogen-evolution reaction (HER) and oxygen-reduction reaction (ORR). For HER, in an acidic solution the Mo2C–GNR has an onset potential of 39 mV and a Tafel slope of 65 mV dec–1, and in a basic solution Mo2C–GNR has an onset potential of 53 mV, and Tafel slope of 54 mV dec–1. It is stable in both acidic and basic media. Mo2C–GNR is a high-activity ORR catalyst with a high peak current density of 2.01 mA cm–2, an onset potential of 0.93 V that is more positive vs reversible hydrogen electrode (RHE), a high electron transfer number n (∼3.90), and long-term stability.
    Citation
    Fan, Xiujun, Liu, Yuanyue, Peng, Zhiwei, et al.. "Atomic H-Induced Mo2C Hybrid as an Active and Stable Bifunctional Electrocatalyst." ACS Nano, 11, no. 1 (2017) American Chemical Society: 384-394. http://dx.doi.org/10.1021/acsnano.6b06089.
    Published Version
    http://dx.doi.org/10.1021/acsnano.6b06089
    Keyword
    Mo2C; graphene nanoribbon; hydrogen evolution reaction (HER); oxygen reduction reaction (ORR); atomic H
    Type
    Journal article
    Publisher
    American Chemical Society
    Citable link to this page
    https://hdl.handle.net/1911/93911
    Rights
    This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society.
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    • Chemistry Publications [636]
    • Faculty Publications [4988]
    • Materials Science and NanoEngineering Publications [352]

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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map