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

Claim 10:
11. 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 eletrolyte;
a metallic interconnect disposed between the at least two adjacent solid oxide fuel cells, the metallic interconnect including a lower contact surface facing an upper contact surface of the electrolyte of an adjacent solid oxide fuel cell of the at least two adjactent solid oxide fuel cells, the metallic interconnect contacting the adjacent solid oxide fuel cell on the lower contact surface;
a glass seal disposed between the metallic interconnect and the electrolyte of the adjacent solid oxide fuel cell of the at least two adjacent solid oxide fuel cells, the galss seal disposed on the upper contact surface of the electrolyte; and
a barrier layer disposed between the metallic interconnect and the glass seal and directly contacting the lower contact surface of 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.