Atomic H-Induced Mo2C Hybrid as an Active and Stable Bifunctional Electrocatalyst
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.
- Authors:
-
[2];
[8];
[5]
- Shanxi Univ. (China); Beijing Univ. of Technology (China); Rice Univ., Houston, TX (United States)
- California Inst. of Technology (CalTech), Pasadena, CA (United States)
- Rice Univ., Houston, TX (United States). Dept. of Chemistry
- Beijing Univ. of Tech. (China). Inst. of Microstructure and Properties of Advanced Materials
- Rice Univ., Houston, TX (United States). Dept. of Chemistry and Dept. of Materials Science and NanoEngineering
- Shanxi Univ. (China)
- Shanxi Univ. (China); Rice Univ., Houston, TX (United States)
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Materials and Process Simulation Center
- Beijing Univ. of Tech. (China). College of Electronic Information and Control Engineering
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC)
- OSTI Identifier:
- 1487283
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Nano
- Additional Journal Information:
- Journal Volume: 11; Journal Issue: 1; Journal ID: ISSN 1936-0851
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Fan, Xiujun, Liu, Yuanyue, Peng, Zhiwei, Zhang, Zhenhua, Zhou, Haiqing, Zhang, Xianming, Yakobson, Boris I., Goddard, William A., Guo, Xia, Hauge, Robert H., and Tour, James M. Atomic H-Induced Mo2C Hybrid as an Active and Stable Bifunctional Electrocatalyst. United States: N. p., 2016.
Web. doi:10.1021/acsnano.6b06089.
Fan, Xiujun, Liu, Yuanyue, Peng, Zhiwei, Zhang, Zhenhua, Zhou, Haiqing, Zhang, Xianming, Yakobson, Boris I., Goddard, William A., Guo, Xia, Hauge, Robert H., & Tour, James M. Atomic H-Induced Mo2C Hybrid as an Active and Stable Bifunctional Electrocatalyst. United States. https://doi.org/10.1021/acsnano.6b06089
Fan, Xiujun, Liu, Yuanyue, Peng, Zhiwei, Zhang, Zhenhua, Zhou, Haiqing, Zhang, Xianming, Yakobson, Boris I., Goddard, William A., Guo, Xia, Hauge, Robert H., and Tour, James M. Sun .
"Atomic H-Induced Mo2C Hybrid as an Active and Stable Bifunctional Electrocatalyst". United States. https://doi.org/10.1021/acsnano.6b06089. https://www.osti.gov/servlets/purl/1487283.
@article{osti_1487283,
title = {Atomic H-Induced Mo2C Hybrid as an Active and Stable Bifunctional Electrocatalyst},
author = {Fan, Xiujun and Liu, Yuanyue and Peng, Zhiwei and Zhang, Zhenhua and Zhou, Haiqing and Zhang, Xianming and Yakobson, Boris I. and Goddard, William A. and Guo, Xia and Hauge, Robert H. and Tour, James M.},
abstractNote = {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.},
doi = {10.1021/acsnano.6b06089},
journal = {ACS Nano},
number = 1,
volume = 11,
place = {United States},
year = {Sun Dec 18 00:00:00 EST 2016},
month = {Sun Dec 18 00:00:00 EST 2016}
}
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