METHOD OF MANUFACTURING MEMBRANE ELECTRODE ASSEMBLY

• Main Authors: MATSUOKA TAKAAKI, KAWANAMI HIROSHI, KAWAMURA GOHEI
• Format: Patent
• Language: English
• Published: 26.09.2013
• Subjects: BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

PROBLEM TO BE SOLVED: To provide a method of manufacturing a membrane electrode assembly capable of enhancing catalyst reactivity of a membrane electrode assembly.SOLUTION: A method of depositing a membrane electrode assembly 7 in an evacuated processing container includes a deposition step for depositing the membrane electrode assembly 7 in consistent vacuum without exposing to the atmosphere. The membrane electrode assembly 7 is formed by depositing in the order of a cathode layer 3, an electrolyte layer 4 and an anode layer 5, or an anode layer 5, an electrolyte layer 4 and a cathode layer 3 on a substrate, i.e., a lower separator 2. Since not only the electrolyte layer 4 but also the membrane electrode assembly 7 including the cathode layer 3 and anode layer 5 is formed in consistent vacuum within the evacuated processing container, the boundary surface of the electrolyte layer 4 and the cathode layer 3 and anode layer 5 can be protected against oxidation or contamination incident to exposure to the atmosphere.