Highly Porous Cathode Catalyst Layer Structures for Flexible Solid Oxide Fuel Cell Applications in Vehicles
AssigneeNissan North America, Inc.
InventorsCenk Gumeci, David Thompson
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Abstract
A solid oxide fuel cell (SOFC) includes a cathode having a yttria stabilized zirconia (YSZ) structure. The YSZ structure is in contact with a solid electrolyte layer. A lanthanum strontium manganite (LSM) structure is deposited on the YSZ structure to form a composite cathode. The cathode includes a catalyst layer. The catalyst layer is a mesoporous nanoionic catalyst material integrated with the YSZ and LSM structures. Alternatively, or in addition to, the mesoporous nanoionic catalyst material may be coated onto the YSZ and LSM structures or embedded into the YSZ and LSM structures. The mesoporous nanoionic catalyst material may form an interconnected fibrous network.
Claims20
A solid oxide fuel cell, comprising:
- a current collector;
- a solid electrolyte layer;
- and
- a cathode comprising:
- yttria stabilized zirconia (YSZ) extending between the current collector and the solid electrolyte layer and in contact with the solid electrolyte layer;
- lanthanum strontium manganite (LSM) deposited on the YSZ;
- and
- a mesoporous nanoionic catalyst material embedded into the YSZ and LSM, wherein the mesoporous nanoionic catalyst material comprises an interconnected fibrous network.
A solid oxide fuel cell, comprising:
- a current collector;
- a solid electrolyte layer;
- and
- a cathode comprising:
- yttria stabilized zirconia (YSZ) extending between the current collector and the solid electrolyte layer and in contact with the solid electrolyte layer;
- lanthanum strontium manganite (LSM) deposited on the YSZ;
- a mesoporous nanoionic catalyst material embedded into the YSZ and LSM, wherein the mesoporous nanoionic catalyst material comprises an interconnected fibrous network;
- a first mesoporous getter layer deposited on the LSM to collect Cr vapor;
- and
- a second mesoporous getter layer deposited on the mesoporous nanoionic catalyst material to collect Cr vapor.
Dependencies are inferred from the claim text.