Diaphragm for solid polymer fuel cell and membrane-electrode assembly
AssigneeTokuyama Corporation
InventorsKazuyuki Sadasue, Kenji Fukuta
Life of this patent
Estimating the term…
Abstract
The present invention discloses a membrane for polymer electrolyte fuel cell, which comprises a hydrocarbon cation exchange resin membrane wherein a cation exchange group is covalently bonded to a hydrocarbon resin, and an adhesive layer formed on at least one side of the hydrocarbon cation exchange resin membrane, wherein the adhesive layer is made of a hydrocarbon cation exchange resin having a Young's modulus of 1 to 300 MPa and a solubility of less than 1% by mass in water of 20° C.; and a membrane-electrode assembly which is obtained by forming a catalyst electrode layer on at least one side of the above-mentioned membrane for polymer electrolyte fuel cell.
Claims8
A membrane for polymer electrolyte fuel cell used for preparing a membrane-electrode assembly, which comprises a hydrocarbon cation exchange resin membrane wherein a cation exchange group is covalently bonded to a hydrocarbon resin, and an adhesive layer used for bonding a catalyst electrode layer formed on at least one side of the hydrocarbon cation exchange resin membrane, wherein the adhesive layer consists essentially of a hydrocarbon cation exchange resin having a Young's modulus of 1 to 300 MPa and a solubility of less than 1% by mass in water of 20° C., wherein the thickness of the adhesive layer is 0.1 to 20 μm.
Dependencies are inferred from the claim text.