| 摘要 |
PROBLEM TO BE SOLVED: To provide a moisture control sheet which is excellent in water retentivity in addition to drainability, gas diffusivity, and handleability, and to provide a gas diffusion sheet, a membrane-electrode assembly, and a polymer electrolyte fuel cell using the moisture control sheet.SOLUTION: The moisture control sheet of the present invention is an independent moisture control sheet which is used by being arranged adjacent to a catalyst layer of a polymer electrolyte fuel cell. The moisture control sheet includes a water-absorbing nonwoven fabric layer which contains a water-absorbing material at voids of a nonwoven fabric containing conductive fibers which contain conductive particles at least inside a hydrophobic organic resin. The gas diffusion sheet, the membrane-electrode assembly, and the polymer electrolyte fuel cell include the moisture control sheet. |
