Preparation and evaluation of electrodeposited platinum nanoparticles on in situ carbon nanotubes grown carbon paper for proton exchange membrane fuel cells

K. Saminathan, V. Kamavaram, V. Veedu, Arunachala Mada Kannan

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Multi-walled carbon nanotubes (MWCNTs) based microporous layer on the non-woven carbon paper substrates was prepared by in situ growth in a chemical vapor deposition method. Pt with a loading of ∼0.13 mg cm-2 was electrodeposited at -0.3, -0.6, -1.2, -2.4, and -3.6 V vs SCE in a chloroplatinic acid (60 g/L) and hydrochloric acid (10 g/L) bath using a potentiostat. Scanning electron micrographs showed that the Pt nanoparticles decorated on the MWCNTs/carbon paper are highly uniform, especially at an electrodeposition voltage of -0.6 V vs SCE. Pt particles' size at various deposition potentials, as estimated by X-ray diffraction analysis is in nanosize range with an average diameter of 6 nm. Fuel cell performance of the Pt deposited in situ grown MWCNTs carbon paper was evaluated using Nafion-212 membrane at various operating conditions. The cathode with Pt deposition at -0.6 V showed a power density of ∼640 mW cm-2 at 80 °C using H2 and O2 at 90% RH and 101 kPa.

Original languageEnglish (US)
Pages (from-to)3838-3844
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number9
DOIs
StatePublished - May 1 2009

Keywords

  • Electrodeposition
  • In situ MWCNTs
  • PEM fuel cells
  • Platinum nanoparticles

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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