The present invention provides a process for the manufacture of a reinforced membrane-seal assembly, the process comprising, forming one or more strips of an ion-conducting component in a plane on a temporary carrier component, forming a plurality of strips of seal component in the same plane on the temporary carrier component, such that the one or more strips of an ion-conducting component lie between two of said strips of seal component, wherein a planar reinforcing component comprising a plurality of pores is provided in the plane, such that the ion-conducting component and the seal component fill the plurality of pores, the one or more strips of an ion-conducting component, the plurality of strips of seal component and the planar reinforcing component thereby together form a reinforced membrane-seal assembly, and wherein each strip of ion-conducting component extends from a first end of said assembly to a second opposite end.

To provide a polymer wherein a linking group that connects the main chain of the polymer and a cyclic perfluoroaliphatic disulfonimide skeleton, is a fluoroalkylene group which may have an ether oxygen atom. A polymer which has either one or both of units represented by formula u1-1 and units represented by formula u1-2: ##STR00001##
R.sup.F1, R.sup.F2: a C.sub.1-3 perfluoroalkylene group; R.sup.F3: a C.sub.1-6 perfluoroalkylene group; m: 0 or 1; and X: a hydrogen atom, an alkali metal atom, a fluorine atom, an alkyl group, ammonium or the like.

An electrode structure includes a sheet-shaped electrode base member formed of a porous material. The electrode base member is provided with an electrode function part, and a seal function part. The electrode function part has a diffusion layer and a catalyst layer. The seal function part is disposed on at least an outer peripheral region of the electrode function part and formed by impregnating the electrode base member with an elastomer.

Provided is an ion conductor composition for improving the ion conductivity of a polymer electrolyte membrane under low humidity/high temperature conditions. The ion conductor composition according to the present disclosure includes 100 parts by weight of an ion conductor and 0.05 to 10 parts by weight of a sugar compound on the basis of 100 parts by weight of the ion conductor.

Provided is an ion conductor composition for improving the ion conductivity of a polymer electrolyte membrane under low humidity/high temperature conditions. The ion conductor composition according to the present disclosure includes 100 parts by weight of an ion conductor and 0.05 to 10 parts by weight of a sugar compound on the basis of 100 parts by weight of the ion conductor.

Provided is a lamination device that laminates an electrolyte film and a porous film. The lamination device includes a support portion configured to support a porous film roll, in which the porous film is wound, such that the porous film roll is able to revolve, an unwinding portion configured to support an electrolyte film roll, in which the electrolyte film is wound, and unwind the electrolyte film from the electrolyte film roll, a conveying portion configured to convey the unwound electrolyte film, and a control portion configured to control the support portion, the unwinding portion, and the conveying portion. The control portion is configured to control the support portion such that the conveyed electrolyte film and the porous film roll are brought closer to one another and an outer peripheral surface of the porous film roll is pressed against one of surfaces of the electrolyte film.

The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.

The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.

Provided are a separator for a fuel cell, a method of manufacturing the same, and a fuel cell electrode assembly, in which the fuel cell separator includes: a support that is formed by accumulating fibers containing 20 wt % to 50 wt % of a fiber-forming polymer and 50 wt % to 80 wt % of a heat-resistant polymer, and has a plurality of pores; and an ion exchange resin filled in the plurality of pores of the support.

The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.