REINFORCED ELECTROLYTE MEMBRANE FOR FUEL CELL, FUEL CELL MEMBRANE-ELECTRODE ASSEMBLY, AND SOLID POLYMER ELECTROLYTE FUEL CELL COMPRISING THE FUEL CELL MEMBRANE-ELECTRODE ASSEMBLY
First Claim
1. A reinforced electrolyte membrane for fuel cell comprising a porous substrate impregnated with a polyelectrolyte liquid dispersion, wherein either the maximum tensile strength in the machine direction (for sheet processing) (MD) or the maximum tensile strength in the transverse direction (TD;
- vertical to the MD direction) for the electrolyte membrane is 70 N/mm2 or more at 23°
C. at a relative humidity of 50%.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a reinforced electrolyte membrane for fuel cell comprising a porous substrate impregnated with a polyelectrolyte liquid dispersion, wherein either the maximum tensile strength in the machine direction (for sheet processing) (MD) or the maximum tensile strength in the transverse direction (TD; vertical to the MD direction) for the electrolyte membrane is 70 N/mm2 or more at 23° C. at a relative humidity of 50% or 40 N/mm2 or more at 80° C. at a relative humidity of 90%. This reinforced electrolyte membrane for fuel cell, in which the amount of fluorine ions eluted as a result of deterioration of electrolyte membrane components in particular is reduced, has excellent durability.
28 Citations
9 Claims
-
1. A reinforced electrolyte membrane for fuel cell comprising a porous substrate impregnated with a polyelectrolyte liquid dispersion, wherein either the maximum tensile strength in the machine direction (for sheet processing) (MD) or the maximum tensile strength in the transverse direction (TD;
- vertical to the MD direction) for the electrolyte membrane is 70 N/mm2 or more at 23°
C. at a relative humidity of 50%. - View Dependent Claims (3, 4, 5, 6, 8, 9)
- vertical to the MD direction) for the electrolyte membrane is 70 N/mm2 or more at 23°
-
2. A reinforced electrolyte membrane for fuel cell comprising a porous substrate impregnated with a polyelectrolyte liquid dispersion, wherein either the maximum tensile strength in the machine direction (for sheet processing) (MD) or the maximum tensile strength in the transverse direction (TD;
- vertical to the MD direction) for the electrolyte membrane is 40 N/mm2 or more at 80°
C. at a relative humidity of 90%. - View Dependent Claims (7)
- vertical to the MD direction) for the electrolyte membrane is 40 N/mm2 or more at 80°
Specification