MEMBRANE-ELECTRODE ASSEMBLY HAVING A MULTICOMPONENT SEALING RIM

摘要

The invention relates to a membrane-electrode assembly having a multicomponent sealing rim, with the rim components being joined by means of two different joining methods. The rim construction of the membrane-electrode assembly comprises at least two materials (sealing material A and frame B) which are joined to one another both by adhesion and by physical locking. The frame B has at least one perforation through which the sealing material penetrates and establishes an intermeshing connection. Adhesive bonding methods, lamination processes and/or injection moulding processes are suitable for producing the multicomponent rim and the corresponding membrane- electrode assembly. The multicomponent rim construction has a high bond strength. The membrane- electrode assembly having a multicomponent rim is used in electrochemical devices such as fuel cells (PEMFCs, DMFCs, etc.), electrolysers or electrochemical sensors.