MANUFACTURING METHOD OF DIFFUSION LAYER FOR FUEL CELL, AND MANUFACTURING METHOD OF FUEL CELL

• Main Authors: NISHIDA TSUNEMASA, MATSUO SHINJI, OCHI TSUTOMU, TAKAHASHI MANABU, TOKUDA KENICHI, NITTA TAKAHIRO
• Format: Patent
• Language: English
• Published: 11.12.2008
• 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 manufacturing method of a diffusion layer for a fuel cell with high water drainage performance, and to provide a manufacturing method of a fuel cell having the diffusion layer for fuel cell. SOLUTION: The manufacturing method of the diffusion layer for the fuel cell includes a coating process to coat a water repellent on a porous substrate and a drying process to dry the porous substrate coated with the water repellent. In the drying process, different drying conditions are established between one face and the other face of the porous substrate, and the concentration distribution of the water repellent in the porous substrate is controlled. COPYRIGHT: (C)2009,JPO&INPIT