Patent ID: 8574785
Filing Date: 2013-11-05
Classification: H01M,Y02E

Abstract:
1. A membrane-electrode assembly for a fuel cell comprising: an anode comprising a catalyst layer; a cathode facing the anode comprising a catalyst layer; a polymer electrolyte membrane positioned between the anode and the cathode; a first binder layer disposed between the polymer electrolyte membrane and the anode, the polymer electrolyte membrane adhering to the anode through the first binder layer; and a second binder layer disposed between the polymer electrolyte membrane and the cathode, the polymer electrolyte membrane adhering to the cathode through the second binder layer; and wherein the polymer electrolyte membrane, the first binder layer and the second binder layer comprise a cation exchange resin and an inorganic silicate, and the mixing ratio of the cation exchange resin and the inorganic silicate is in a range of 98 wt % to 90 wt %:2 wt % to 10 wt %; and the inorganic silicate comprising one selected from the group consisting of pyrophylite-talc, montmorillonite (MMT), fluorohectorite, kaolinite, vermiculite, illite, and combinations thereof; the weight of the mixture of the cation exchange resin and the inorganic silicate of the first binder is in a range of 10 wt % to 20 wt % with respect to the weight of the catalyst in the anode; and the weight of the mixture of the cation exchange resin and the inorganic silicate of the second binder is in a range of 10 wt % to 20 wt % with respect to the weight of the catalyst in the cathode.