Membrane electrode joint product and solid polymer electrolyte fuel cell

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 239 KB
• Volume: 2007
• Category: Article
• ISSN: 1350-4789
• DOI: 10.1016/s1350-4789(07)70412-9

✦ Synopsis

This invention relates to the sealing of a ceramic matrix surface that contains a three-dimensional interconnected network of micro-cracks that are open at the surface. An additive material consisting of a flux or glass, is dispersed in the matrix. At a specified temperature it will soften and migrate by capillary action through the network of micro-cracks to the surface. A sufficient quantity of the additive material is dispersed in the matrix to create a gas-tight barrier.