Synthesis and characterization of carbon nanotubes supported platinum nanocatalyst for proton exchange membrane fuel cells

J. F. Lin, V. Kamavaram, Arunachala Mada Kannan

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Multi-walled carbon nanotubes (MWCNTs) were used as catalyst support for depositing platinum nanoparticles by a wet chemistry route. MWCNTs were initially surface modified by citric acid to introduce functional groups which act as anchors for metallic clusters. A two-phase (water-toluene) method was used to transfer PtCl6 2- from aqueous to organic phase and the subsequent sodium formate solution reduction step yielded Pt nanoparticles on MWCNTs. High-resolution TEM images showed that the platinum particles in the size range of 1-3 nm are homogeneously distributed on the surface of MWCNTs. The Pt/MWCNTs nanocatalyst was evaluated in the proton exchange membrane (PEM) single cell using H2/O2 at 80 °C with Nafion-212 electrolyte. The single PEM fuel cell exhibited a peak power density of about 1100 mW cm-2 with a total catalyst loading of 0.6 mg Pt cm-2 (anode: 0.2 mg Pt cm-2 and cathode: 0.4 mg Pt cm-2). The durability of Pt/MWCNTs nanocatalyst was evaluated for 100 h at 80 °C at ambient pressure and the performance (current density at 0.4 V) remained stable throughout. The electrochemically active surface area (64 m2 g-1) as estimated by cyclic voltammetry (CV) was also similar before and after the durability test.

Original languageEnglish (US)
Pages (from-to)466-470
Number of pages5
JournalJournal of Power Sources
Volume195
Issue number2
DOIs
StatePublished - Jan 15 2010

Fingerprint

Carbon Nanotubes
Proton exchange membrane fuel cells (PEMFC)
Platinum
fuel cells
Carbon nanotubes
platinum
carbon nanotubes
membranes
protons
synthesis
formic acid
durability
Durability
Nanoparticles
catalysts
nanoparticles
citric acid
Citric acid
formates
Toluene

Keywords

  • Carbon nanotubes
  • Membrane/electrode assemblies
  • PEM fuel cells
  • Platinum nanoparticles

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

Cite this

Synthesis and characterization of carbon nanotubes supported platinum nanocatalyst for proton exchange membrane fuel cells. / Lin, J. F.; Kamavaram, V.; Mada Kannan, Arunachala.

In: Journal of Power Sources, Vol. 195, No. 2, 15.01.2010, p. 466-470.

Research output: Contribution to journalArticle

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