Carbon nano-chain and carbon nano-fibers based gas diffusion layers for proton exchange membrane fuel cells

Arunachala Mada Kannan, Lakshmi Munukutla

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Gas diffusion layers (GDL) for proton exchange membrane fuel cell have been developed using a partially ordered graphitized nano-carbon chain (Pureblack® carbon) and carbon nano-fibers. The GDL samples' characteristics such as, surface morphology, surface energy, bubble-point pressure and pore size distribution were characterized using electron microscope, inverse gas chromatograph, gas permeability and mercury porosimetry, respectively. Fuel cell performance of the GDLs was evaluated using single cell with hydrogen/air at ambient pressure, 70 °C and 100% RH. The GDLs with combination of vapor grown carbon nano-fibers with Pureblack carbon showed significant improvement in mechanical robustness as well as fuel cell performance. The micro-porous layer of the GDLs as seen under scanning electron microscope showed excellent surface morphology showing the reinforcement with nano-fibers and the surface homogeneity without any cracks.

Original languageEnglish (US)
Pages (from-to)330-335
Number of pages6
JournalJournal of Power Sources
Volume167
Issue number2
DOIs
StatePublished - May 15 2007

Keywords

  • Carbon nano-fibers
  • Gas diffusion layers
  • Inverse gas chromatography
  • Pureblack carbon
  • Surface energy

ASJC Scopus subject areas

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

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