Influence of hydrophilic and hydrophobic double MPL coated GDL on PEFC performance without cathode humidification

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

5 被引用数 (Scopus)

抄録

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 without cathode humidification. A hydrophobic binder of polytetrafluoroethylene (PTFE) and a hydrophilic binder of polyvinyl alcohol (PVA) were used to coat the MPL on the carbon paper substrate. The hydrophilic layer is effective for conserving humidity at the catalyst layer, while the hydrophobic intermediate layer between the hydrophilic layer and the substrate prevents the removal of water in the hydrophilic layer via dry air in the substrate. Reducing the hydrophilic layer thickness to 5 μm was effective for enhancing PEFC performance. Appropriate enhancement of hydrophilicity by increasing the PVA content to 5 mass% was also effective for enhancing PEFC performance.

本文言語英語
ホスト出版物のタイトルPolymer Electrolyte Fuel Cells 10, PEFC 10
ページ1089-1097
ページ数9
1 PART 2
DOI
出版ステータス出版済み - 2010
イベント10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting - Las Vegas, NV, 米国
継続期間: 10月 10 201010月 15 2010

出版物シリーズ

名前ECS Transactions
番号1 PART 2
33
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

その他

その他10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting
国/地域米国
CityLas Vegas, NV
Period10/10/1010/15/10

!!!All Science Journal Classification (ASJC) codes

  • 工学(全般)

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