A polymer electrolyte fuel cell comprising a polymer electrolyte made of an ion exchange membrane, catalyst layers disposed on both sides thereof and current collectors disposed on the outer sides thereof, wherein a solvent-soluble fluorine-containing poly...

A process for producing a carbon material for an electric double layer capacitor electrode, which comprises: 1) a step of activating a graphitizable carbon or a graphitizable carbon source to bring its pore volume to be from 0.6 to 1.5 cm/g; and 2) a step ...

A method for producing an electrolyte membrane for a polymer electrolyte fuel cell, which comprises forming into a membrane a mixture of a perfluorocarbon polymer having sulfonic acid groups or their precursors and a fluorocarbon polymer which can be fibri...