Patent ID: 11955671
Assignee: CUMMINS ENTERPRISE LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 19:
20. A method of fabricating a solid oxide fuel cell stack comprising:
stacking at least two solid oxide fuel cells to create at least two adjacent solid oxide fuel cells, each solid oxide fuel cell of the at least two adjacent solid oxide fuel cells comprising an anode, a cathode, and an electrolyte;
disposing a metallic interconnect between the at least two adjacent solid oxide fuel cells so as to support an upper solid oxide fuel cell of the at least two adjacent solid oxide fuel cells;
disposing a glass seal between the metallic interconnect and the electrolyte of a lower solid oxide fuel cell of the at least two adjacent solid oxide fuel cells; and
disposing a barrier layer between the metallic interconnect and the glass seal such that the barrier layer directly contacts the metallic interconnect, wherein the barrier layer comprises alumina and a phosphate, and wherein the phosphate comprises an aluminum dihydrogen phosphate, an aluminum-containing phosphate, a phosphate of an element of the metallic interconnect, a phosphate of an element of the glass seal, or combinations thereof,
wherein the barrier layer and the glass seal are disposed in a non-active region of the metallic interconnect such that the barrier layer and the glass layer do not directly contact the anode and the cathode of either of the at least two adjacent solid oxide fuel cells.