Patent ID: 7041191

Claim:
A method for manufacturing a membrane electrode assembly of a fuel cell, comprising the following steps: (a) preparing an ion exchange membrane with a predetermined size, and preparing anode and cathode catalyst solutions, the step of preparing an ion exchange membrane includes the steps of: (i) rinsing the ion exchange membrane in pure water at 80° for one hour; (ii) washing the ion exchange membrane in 1M hydrogen peroxide solution at 80° C. for one hour; (iii) rinsing the ion exchange membrane in pure water at 80° C. for one hour; (iv) positioning the ion exchange membrane in 1M sulfuric acid solution at 80° C.; and (v) rinsing the ion exchange membrane two or three times with pure water at 80° C.; (b) positioning the ion exchange membrane of the predetermined size on a base plate, which is then mounted to a screen-printing platform; (c) mounting a printing plate to a screen retainer of the platform; (d) coating the catalyst solutions on a patterned area of the printing plate with a scraper and printing the catalyst solutions onto the ion exchange membrane positioned on the base plate with the scraper; (e) positioning the ion exchange membrane on a heating board for heating; and (f) curing the catalyst solution and waiting for the ion exchange membrane to get flattened and thereby forming uniform coatings of the catalysts on the ion exchange membrane.