Numerical estimation of the effective electrical conductivity in carbon paper diffusion media

Download
  1. Get@NRC: Numerical estimation of the effective electrical conductivity in carbon paper diffusion media (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1016/j.apenergy.2011.08.037
AuthorSearch for: ; Search for: ; Search for:
TypeArticle
Proceedings titleApplied Energy
ConferenceFifth International Green Energy Conference, June 1–3, 2010, Waterloo, Ontario, Canada
ISSN0306-2619
Volume93
Pages3944; # of pages: 6
SubjectEffective electrical conductivity; Gas diffusion layer; PEM fuel cells; Carbon paper
AbstractThe transport of electrons through the gas diffusion layer (GDL) of polymer electrolyte membrane (PEM) fuel cells has a significant impact on the optimal design and operation of PEM fuel cells and is directly affected by the anisotropic nature of the carbon paper material. In this study, a three-dimensional reconstruction of the GDL is used to numerically estimate the directional dependent effective electrical conductivity of the layer for various porosity values. The distribution of the fibers in the through-plane direction results in high electrical resistivity; hence, decreasing the overall effective electrical conductivity in this direction. This finding is in agreement with measured experimental data. Further, using the numerical results of this study, two mathematical expressions were proposed for the calculation of the effective electrical conductivity of the carbon paper GDL. Finally, the tortuosity factor was evaluated as 1.7 and 3.4 in the in- and through-plane directions, respectively.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
IdentifierS0306261911005472
NPARC number21268663
Export citationExport as RIS
Report a correctionReport a correction
Record identifier82274df0-294a-4984-9be2-e3c654e71145
Record created2013-11-06
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)