Gas diffusion layer coated with a microporous layer containing hydrophilic CNTs to enhance PEFC performance without humidification using anode gas recirculation

T. Kitahara, H. Nakajima, K. Ishikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The present study was carried out to clarify the effect of anode gas recirculation on PEFC performance without humidification. Raising the gas flow velocity in the channel to 2 m s-1 by increasing the anode gas recirculation promotes water transport from the anode gas to the membrane. Decreasing the pore diameter of a microporous layer (MPL)-coated gas diffusion layer (GDL) at the cathode is effective at preventing membrane dehydration, which enhances PEFC performance without humidification. However, decreasing the MPL pore diameter significantly increases the water breakthrough pressure, reducing the ability of the MPL to reduce the flooding under high humidity conditions. When using an MPL containing hydrophilic carbon nanotubes, it is possible to decrease the pore diameter without raising the water breakthrough pressure. This is effective at enhancing PEFC performance under both no and high humidity conditions, compared with that obtained for a hydrophobic MPL-coated GDL.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 16, PEFC 16
EditorsD. J. Jones, F. N. Buchi, B. S. Pivovar, T. F. Fuller, A. Z. Weber, L. Zhuang, C. Coutanceau, P. N. Pintauro, K. E. Ayers, V. K. Ramani, P. Strasser, R. A. Mantz, S. R. Narayanan, S. Mitsushima, T. J. Schmidt, S. G. Sun, H. Uchida, H. A. Gasteiger, K. Swider-Lyons, J. M. Fenton, Y. T. Kim, K. A. Perry, P. Shirvanian, K. Shinohara
PublisherElectrochemical Society Inc.
Pages209-217
Number of pages9
Edition14
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2016
EventSymposium on Polymer Electrolyte Fuel Cells 16, PEFC 2016 - PRiME 2016/230th ECS Meeting - Honolulu, United States
Duration: Oct 2 2016Oct 7 2016

Publication series

NameECS Transactions
Number14
Volume75
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherSymposium on Polymer Electrolyte Fuel Cells 16, PEFC 2016 - PRiME 2016/230th ECS Meeting
Country/TerritoryUnited States
CityHonolulu
Period10/2/1610/7/16

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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