Corrosion Resistant Barrier Layer for a Solid Oxide Fuel Cell Stack and Method of Making Thereof

摘要

A method of forming diffusion barrier layer includes providing an interconnect for a fuel cell stack, forming a glass barrier precursor layer over a Mn and/or Co containing electrically conductive contact layer on the interconnect, and heating the barrier precursor layer to precipitate crystals in the barrier precursor layer to convert the barrier precursor layer to a glass ceramic barrier layer.

主权项

1. A method of forming a diffusion barrier layer, comprising:
providing an interconnect for a fuel cell stack, wherein the interconnect contains an electrically conductive contact layer located on an air surface of the interconnect, and wherein the electrically conductive contact layer contains at least one of Co and Mn; forming a barrier precursor layer comprising at least 90 wt. % glass over the electrically conductive contact layer; and heating the barrier precursor layer to precipitate crystals in the barrier precursor layer to convert the barrier precursor layer to a glass ceramic barrier layer.