Abstract
In the present study, Pt–Sn–M (M = Ru, Ni, and Ir) nanocatalysts were supported on multiwalled carbon nanotube and their electrocatalytic activity for ethanol oxidation in membraneless fuel cells was investigated. The combination of monometallic Pt/MWCNTs, bi-metallic Pt–Sn/MWCNTs, and tri-metallic Pt–Sn–Ru/MWCNT, Pt–Sn–Ni/MWCNT, and Pt–Sn–Ir/MWCNT nanocatalysts were prepared by the ultrasonic assisted chemical reduction method. Transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) were used for the catalyst characterization. The electrocatalytic activities of the catalysts were investigated in half-cell experiments using cyclic voltammetry (CV), CO stripping voltammetry, and chronoamperometry (CA). During the experiments performed on a single membraneless ethanol fuel cell (MLEFC), the Pt–Sn–Ir/MWCNTs exhibited a better catalytic activity from among all the catalysts prepared, with a power density of 39.25 mW cm−2.
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The financial support for this research from the University Grants Commission (UGC), New Delhi, India, through a Major Research Project 42-325/20134 (SR) is gratefully acknowledged.
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Thilaga, S., Durga, S., Selvarani, V. et al. Multiwalled carbon nanotube supported Pt–Sn–M (M = Ru, Ni, and Ir) catalysts for ethanol electrooxidation. Ionics 24, 1721–1731 (2018). https://doi.org/10.1007/s11581-017-2349-6
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DOI: https://doi.org/10.1007/s11581-017-2349-6