| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid polymer type fuel battery diaphragm of sufficient physical strength, low electric resistance, and low gas permeability. SOLUTION: The diaphragm for a solid polymer type fuel battery is provided which comprises a hydrocarbon positive ion exchange resin film whose parent material is a fluorine resin porous film which is processed to be hydrophilic, with the electric resistance in a sulfuric acid aqueous solution, 1 mol/L, preferred to be 0.20 Ω.cm2 or lower while the permeability of hydrogen gas being 3.0×10-8 cm3 (STP) cm.cm-2.s-1.cmHg-1 or below at 50 deg.C. |
