Patent ID: 8828618
Filing Date: 2014-09-09
Classification: H01M,Y02E,Y02P

Abstract:
1. An anode system for a solid oxide fuel cell for use with sulfur-containing fuel streams, the anode comprising: a first anode/electrolyte interfacial layer comprising a thin dense ceria layer on an electrolyte membrane; a second anode/electrolyte interfacial layer comprising a porous ceria layer on the first anode/electrolyte interfacial layer; a first cermet anode layer on the second anode/electrolyte interfacial layer, the metallic component of the first cermet comprising at least one of nickel, an alloy containing nickel and cobalt, and a mixture of nickel and cobalt compositions, and the ceramic component of the first cermet comprising a doped ceria electrolyte material; and a second cermet anode layer on the first cermet anode layer, the metallic component of the second cermet comprising at least one of nickel, an alloy containing nickel and cobalt, and a mixture of nickel and cobalt compositions, the ceramic component of the second cermet comprising a ceramic electrolyte material, and the cermet having a coarser microstructure and a higher metal content than the first cermet layer; wherein said first and second cermet anode layers comprise 20 to 80 percent by weight of ceramic component.