Surface modification of gas diffusion layers by inorganic nanomaterials for performance enhancement of proton exchange membrane fuel cells at low RH conditions

L. Cindrella, Arunachala Mada Kannan, R. Ahmad, M. Thommes

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Prompted by our earlier study that fumed silica on gas diffusion layer (GDL) favored a performance improvement of the single fuel cell at lower RH conditions, the present study has been carried out with inorganic oxides in the nanoscale such as TiO2, Al2O3, commercially available mixed oxides, hydrophilic silica and aerosil silica. The structure of each of the oxide coating on the GDL surface has resulted in refinement with graded pore dimension as seen from the Hg porosimetry data. The fuel cell evaluation at various RH conditions (50-100%) revealed that the performance of all the inorganic oxides loaded GDL is very high compared to that of pristine GDL. The results confirm our earlier observation that inorganic oxides on GDL bring about structural refinement favorable for the transport of gases, and their water retaining capacity enable a high performance of the fuel cell even at low RH conditions.

Original languageEnglish (US)
Pages (from-to)6377-6383
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number15
DOIs
StatePublished - Aug 1 2009

Keywords

  • Contact angle
  • GDL
  • Membrane electrode assembly
  • Nanomaterials
  • PEM fuel cells
  • Porosity
  • Surface morphology

ASJC Scopus subject areas

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

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