Patent ID: 6224746
Filing Date: 2001-05-01
Classification: B01D,H01M,Y02E,Y02P

Abstract:
A method for testing a membrane/electrode unit (MEU) which comprises a membrane having a first side and an opposite second side, said MEU suitable for use in fuel cells and having electrode elements on said first and second sides of the membrane, the method comprising:providing said membrane;limiting said test to a part of an area of said membrane;feeding a useful-material to said first side of said membrane via a useful-material outlet orifice of a housing, wherein an area bounded by the useful-material outlet orifice corresponds to said area part to be tested and wherein said useful-material is a fuel gas fed to the housing at a specific partial pressure;providing an oxidation gas of a specific partial pressure to said second side of the MEU; andmeasuring an electrical voltage generated between said electrode elements on said first and second sides of the MEU and/or an electrical current flowing between the electrode elements.