Gasket structure for a fuel cell stack and method for its preparation

摘要

An electrically insulating sealing arrangement is made by producing a ceramic metal layer from a mixture of a ceramic material and a metal material and/or a metal precursor; and partially converting the metal of the ceramic metal layer into an electrically non-conductive metal compound to produce a non-conductive boundary layer. Independent claims are included for: (1) a sealing arrangement for a fuel cell stack comprises several fuel cell units that succeed one another along a stack direction, in which the sealing arrangement exhibits an electrically insulating effect. The sealing arrangement has at least one non-conductive boundary formed from a mixture of a ceramic material and a non-conductive metal compound formed in from a metal; and (2) a fuel cell stack comprising fuel cells units and at least one sealing arrangement.