Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 44, Issue 16, Pages 8415-8424Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.02.059
Keywords
Transition metal nitrides; Urchin-like structure; Porous; Methanol oxidation reaction; Durability
Categories
Funding
- National Natural Science Foundation of China [21303210, 21805104]
- PhD Start-up Fund of Natural Science Foundation of Guangdong Province [2018A030310514]
- Educational Commission of Guangdong Province [2017KQNCX064]
- Research Fund Program of Key Laboratory of Fuel Cell Technology of Guangdong Province, Weifang Science and Technology Development Plan Project [2018GX108]
- Open Experimental Project of Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization [2018 LS017]
- Doctoral Fund Project of Weifang University of Science and Technology [2017BS11]
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The development of highly effective and robust electrocatalysts is an imperative requirement for the commercialization of direct methanol fuel cells. In this work, three dimensional, porous and urchin-like titanium copper nitride architectures is explored and implemented as the Pt support. The methanol oxidation reaction (MOR) performance of the obtained electrocatalyst shows a specific and mass activity of 1.46 mAcm(-2) and 0.84 Amg(Pt)(-1), respectively, which are both more than 3 times higher compared with the commercial Pt/C catalyst. Notably, the novel catalyst also exhibits high stability, and a much slower performance decay compared with the benchmarked Pt/C with the same durability testing procedures. The comprehensive data confirms that the new type catalyst possesses a high charge transfer during the MOR process, and the synergistic effects between anchored Pt and the support mainly contributes to the high stability. This work provides a strategic method for designing effective MOR electrocatalyst with desirable stability. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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