FUEL CELL GAS DIFFUSION LAYER
To provide a fuel cell gas diffusion layer improved in drainage while maintaining gas diffusion properties.SOLUTION: A fuel cell gas diffusion layer includes: a gas diffusion base material comprising a conductive porous body; and a porous and conductive water repellent layer formed on the gas diffus...
Gespeichert in:
Hauptverfasser: | , , , , , , , |
---|---|
Format: | Patent |
Sprache: | eng ; jpn |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | To provide a fuel cell gas diffusion layer improved in drainage while maintaining gas diffusion properties.SOLUTION: A fuel cell gas diffusion layer includes: a gas diffusion base material comprising a conductive porous body; and a porous and conductive water repellent layer formed on the gas diffusion base material. In the water repellent layer, a ratio D/Dof a maximum value Dof volumes of pores having diameters in the range of 0.01-0.5 μm to a volume Dof pores having a diameter of 1 μm in a pore distribution measured using a mercury porosimeter is 0.27 or more.SELECTED DRAWING: Figure 1
【課題】ガス拡散性を維持しつつ、排水性を向上させた燃料電池用ガス拡散層を提供する。【解決手段】導電性多孔体から構成されるガス拡散基材と、前記ガス拡散基材上に形成され、多孔質かつ導電性の撥水層と、を備える燃料電池用ガス拡散層であって、前記撥水層は、水銀ポロシメーターを用いて測定した細孔分布において、細孔直径0.01〜0.5μmの範囲における細孔容積の最大値Dmaxと、細孔直径1μmにおける細孔容積D1との比、D1/Dmaxが0.27以上である、燃料電池用ガス拡散層。【選択図】図1 |
---|