Environmentally tolerant anode catalyst for a solid oxide fuel cell
View Patent ↗A solid oxide fuel cell includes a cathode, a solid ceramic electrolyte, and an anode comprising a cermet containing an environment tolerant catalyst, such as a fuel starvation and/or a sulfur tolerant catalyst.
1. A solid oxide fuel cell, comprising:
a cathode;
a solid ceramic electrolyte comprising a stabilized zirconia layer and a samaria doped ceria layer; and
a fuel starvation tolerant anode comprising a cermet consisting essentially of Ni, a stabilized zirconia and a catalyst material which excludes Ru.
2. The fuel cell of claim 1 , wherein the fuel starvation tolerant anode comprises a catalyst material selected from at least one of Pt, Pd, and Rh, and the stabilized zirconia comprises YSZ.
3. The fuel cell of claim 1 , wherein the anode cermet excludes Ru.
4. The fuel cell of claim 1 , wherein the electrolyte comprises the samaria doped ceria layer located between two stabilized zirconia layers.
5. The fuel cell of claim 1 , wherein the samaria doped ceria layer is located between the anode and the stabilized zirconia layer.
6. The fuel cell of claim 1 , wherein the stabilized zirconia layer comprises a YSZ layer.
7. The fuel cell of claim 1 , wherein the electrolyte comprises a planar electrolyte.
8. The fuel cell of claim 1 , wherein the electrolyte supports the anode and the cathode.
9. The fuel cell of claim 1 , wherein the electrolyte comprises a planar electrolyte and the electrolyte supports the anode and the cathode.