Proton-conducting polymer composition and method for preparation thereof, catalyst ink containing said proton-conducting polymer composition and fuel cell including said catalyst ink

Abstract

A proton-conducting polymer composition which contains an aromatic hydrocarbon type of proton-conducting polymer in an amount of 1 to 30 mass %, wherein a component of said proton-conducting polymer having a molecular weight in the range of 2,000 to 230,000 in terms of polyethylene glycol accounts for 10 mass % or more of the total amount of said proton-conducting polymer; a method for preparing the proton-conducting polymer composition, a catalyst ink comprising the proton-conducting polymer composition and a fuel cell including the catalyst ink. The above proton-conducting polymer composition can well exploit the performance capability of a catalyst of a fuel cell, especially when it is allowed to be present with the electrode of a fuel cell.

Dependencies are inferred from the claim text.