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Pt–Ru/multi-walled carbon nanotubes as electrocatalysts for direct methanol fuel cell by Neetu Jha; A. Leela Mohana Reddy; M.M. Shaijumon; N. Rajalakshmi; S. Ramaprabhu is a Engineering article available to read on EtoBox.

What is Pt–Ru/multi-walled carbon nanotubes as electrocatalysts for direct methanol fuel cell about?

Multi-walled carbon nanotubes (MWNTs) have been synthesized by hemical vapour deposition technique using AB 3 alloy hydride catalyst and platinum supported MWNT (Pt/MWNT) and platinum-ruthenium supported MWNT (Pt-Ru/MWNT) electrocatalysts have been prepared by chemical reduction method. MWNT and electrocatalysts have been characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM) and energy dispersive X-ray analysis (EDX). The anode and cathode electrodes of direct methanol fuel cells (DMFC) have been fabricated using Pt-Ru/MWNT and 1:1 Pt/MWNT + Pt/C electrocatalyst, respectively. Performances of DMFC with these electrodes have been studied at different temperatures and the results have been discussed. A maximum power density of 39.3 mW/cm 2 at a current density of 130 mA/cm 2 has been obtained, which could be attributed to dispersion and accessibility of MWNT support and Pt-Ru in the electrocatalyst mixture for methanol oxidation reaction.

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Author

Neetu Jha; A. Leela Mohana Reddy; M.M. Shaijumon; N. Rajalakshmi; S. Ramaprabhu

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0360-3199)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)