Patent ID: 9496560
Filing Date: 2016-11-15
CPC Classification: B82Y,H01M,Y02E,Y02P

Claim Text:
1. A method of producing a fuel cell, comprising: preparing a plurality of carbon nanotubes that are aligned vertically to a plane of a substrate; supporting an electrode catalyst on the carbon nanotubes; forming an electrode layer by disposing an ionomer formed of a first solid polymer electrolyte having a glass-transition temperature of at least 150° C. on a surface of the carbon nanotubes on which the electrode catalyst is supported; placing the electrode layer to face an electrolyte membrane formed of a second solid polymer electrolyte, which has a glass-transition temperature of 100° C. to 120° C., and bonding the electrolyte membrane to the electrode layer such that the ionomer on the surface of the carbon nanotubes is not softened and a portion of the carbon nanotubes is embedded in the semi-melted electrolyte membrane, by applying a pressure of 10 MPa to 15 MPa between the electrolyte membrane and electrode layer at a temperature that is higher than or equal to 120° C. and that is lower than 150° C.; and stopping heating, performing cooling and removing a substrate layer after the electrolyte membrane and electrode layer have been bonded to each other, wherein the first polymer electrolyte has a weight ratio, with regard to the carbon nanotube grown on the substrate layer, of 1.6 to 2.0.