Abstract
In the present study, Pt nanoparticles (20 wt%) were successfully anchored on vanadium (V)-doped titanium nitride hybrid support, which controllable prepared by adjusting the ratio of precursors. Electrochemical performance of the novel Pt/Ti0.8V0.2N electrocatalyst exhibits well stability and better electrocatalytic activity than the conventional Pt/C electrocatalyst under direct methanol fuel cells (DMFCs) conditions. Notable, Pt/Ti0.8V0.2N exhibits negative onset potential (ca. 0.1 V) and higher current density than Pt/TiN (1.7-fold) and Pt/C (2.5-fold), clearly demonstrating that methanol can be oxidized more easily on Pt/Ti0.8V0.2N catalyst. These results indicate that the V doping has co-catalytic and electronic effects, and the hybrid material is indeed a promising support to improve Pt catalytic activity and durability for practical DMFCs.
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Acknowledgments
This research was financially supported by the Natural Science Foundation of Guangdong Province, China (No. 2016A030313704), and Science and Technology Planning Project of Guangdong Province, China (No. 2016A010103035, No. 2016B020240003, No. 2016B090918069).
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Zhang, B., Pan, Z., Yu, K. et al. Titanium vanadium nitride supported Pt nanoparticles as high-performance catalysts for methanol oxidation reaction. J Solid State Electrochem 21, 3065–3070 (2017). https://doi.org/10.1007/s10008-017-3621-4
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DOI: https://doi.org/10.1007/s10008-017-3621-4