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

Claim 0:
1. A solid oxide fuel cell stack comprising:
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;
a metallic interconnect disposed between the at least two adjacent solid oxide fuel cells;
a glass seal disposed between the metallic interconnect and the electrolyte of at least one solid oxide fuel cell of the at least two adjacent solid oxide fuel cells; and
a barrier layer disposed between the metallic interconnect and the glass seal and directly contacting 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.