| 摘要 |
PURPOSE:To form three dimensional networks of an ion exchanger in an electrode catalyst layer sheet to enhance ion conductivity by forming an ion exchanger film easily soluble to alcohol on the surface of a catalyst particle. CONSTITUTION:Carbon black carried with specified platinum is used as a catalyst particle, and mixed with an ion exchanger solution to form an ion exchanger film on the surface of the catalyst particle. The mixture is dried to a degree in which the ion exchanger film becomes easily soluble to alcohol, then the catalyst particle on which the ion exchanger film is formed is rolled or pressed to form a catalyst layer sheet. The catalyst layer sheet is impregnated with an alcohol aqueous solution to dissolve the ion exchanger film on the surface of the catalyst particle, then the catalyst layer sheet is dried to remove the alcohol aqueous solution. The ion exchanger film is formed on the surface of the catalyst particle in a gell state by alcohol. Adhesion between the catalyst particles is increased and ion conductivity is enhanced. |
