Hydrophilic and hydrophobic double MPL coated GDL to enhance PEFC performance under low and high humidity conditions

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

2 Citations (Scopus)

Abstract

Gas diffusion layers (GDLs) coated with a hydrophobic microporous layer (MPL) have been commonly used to improve the water management properties of polymer electrolyte fuel cells (PEFCs). In the present study, a new hydrophilic and hydrophobic double MPL coated GDL was developed to achieve further enhancement of PEFC performance under both low and high humidity conditions. For the double MPL coated GDLs, the hydrophilic layers using either PVA (polyvinyl alcohol) or TiO 2 were coated on the hydrophobic MPL coated GDL. Under low humidity, the double MPLs with the hydrophilic layers using both PVA and TiO 2 are effective for conserving humidity at the catalyst layer, thereby enhancing PEFC performance. Under high humidity, because hydrophilicity of the hydrophilic layer using PVA is too high, PEFC performance is deteriorated due to flooding. However, the appropriate hydrophilic layer using TiO 2 is effective for reducing flooding, thereby enhancing PEFC performance.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 11
Pages593-601
Number of pages9
Edition1
DOIs
Publication statusPublished - Dec 1 2011
Event11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting - Boston, MA, United States
Duration: Oct 9 2011Oct 14 2011

Publication series

NameECS Transactions
Number1
Volume41
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting
CountryUnited States
CityBoston, MA
Period10/9/1110/14/11

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Kitahara, T., Nakajima, H., & Mori, K. (2011). Hydrophilic and hydrophobic double MPL coated GDL to enhance PEFC performance under low and high humidity conditions. In Polymer Electrolyte Fuel Cells 11 (1 ed., pp. 593-601). (ECS Transactions; Vol. 41, No. 1). https://doi.org/10.1149/1.3635592