FUEL CELLS WITH A LAYERED ELECTROLYTE

• US 20200136155A1
• Filed: 10/30/2019
• Published: 04/30/2020
• Est. Priority Date: 10/30/2018
• Status: Active Application

• Current Assignee: Phillips 66 Company
• Original Assignee: Phillips 66 Company
• Inventors: Liu, Mingfei, Liu, Ying
• Application Number:
  US16/668,713
• Publication Number:
  US 20200136155A1
• Time in Patent Office: Days
• CPC Class Codes: H01M 2004/8684 Negative electrodes
• CPC Class Codes: H01M 2008/1293 Fuel cells with solid oxide electrolytes
• CPC Class Codes: H01M 2300/0074 Ion conductive at high temperature
• CPC Class Codes: H01M 2300/0077 based on zirconium oxide
• CPC Class Codes: H01M 2300/0094 in the form of layered products, e.g. coatings
• CPC Class Codes: H01M 4/8621 containing only metallic or ceramic material, e.g. made by sintering or sputtering
• CPC Class Codes: H01M 4/9025 Oxides specially used in fuel cell operating at high temperature, e.g. SOFC
• CPC Class Codes: H01M 4/9033 Complex oxides, optionally doped, of the type M1MeO3, M1 being an alkaline earth metal or a rare earth, Me being a metal, e.g. perovskites
• CPC Class Codes: H01M 4/94 Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes
• CPC Class Codes: H01M 8/0289 Means for holding the electrolyte solid polymer electrolytes H01M8/1018
• CPC Class Codes: H01M 8/1213 characterised by the electrode/electrolyte combination or the supporting material
• CPC Class Codes: H01M 8/1226 characterised by the supporting layer
• CPC Class Codes: H01M 8/124 characterised by the process of manufacturing or by the material of the electrolyte
• CPC Class Codes: H01M 8/1253 the electrolyte containing zirconium oxide
• CPC Class Codes: H01M 8/126 the electrolyte containing cerium oxide
• CPC Class Codes: H01M 8/242 comprising framed electrodes or intermediary frame-like gaskets H01M8/2425, H01M8/244 take precedence
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A fuel cell is taught comprising an anode support with an anode functional layer situated on top of and in contact with the anode support. A ScCeSZ electrolyte layer is then disposed on top of and in contact with the anode functional layer. A SDC electrolyte layer is then disposed on top of and in contact with the ScCeSZ electrolyte layer. Finally, a cathode layer is disposed on top of and in contact with the SDC electrolyte layer.

Claims

1. A fuel cell comprising:

an anode support;

an anode functional layer disposed on top and in contact with the anode support;

a ScCeSZ electrolyte layer disposed on top of and in contact with the anode functional layer;

a samarium doped CeO₂ (SDC) electrolyte layer disposed on top of and in contact with the ScCeSZ electrolyte layer; and

a cathode layer disposed on top of and in contact with the SDC electrolyte layer.

2. The fuel cell of claim 1, wherein the anode functional layer is a NiO—

ScCeSZ anode functional layer.

3. The fuel cell of claim 1, wherein the fuel cell is a solid oxide fuel cell.

4. The fuel cell of claim 1, wherein the thickness of the anode functional layer ranges from about 5 to about 50 μ

m.

5. The fuel cell of claim 1, wherein the thickness of the ScCeSZ electrolyte layer ranges from about 1.5 μ

m to about 2.5 μ

m.

6. The fuel cell of claim 1, wherein the thickness of the SDC electrolyte layer ranges from about 9.5 μ

m to about 10.5 μ

m.

7. The fuel cell of claim 1, wherein the sintering of the fuel cell occurs at temperatures less than 1300°

C.

8. A fuel cell comprising:

an anode support;

a NiO—

ScCeSZ anode functional layer disposed on top and in contact with the anode support;

a ScCeSZ electrolyte layer disposed on top of and in contact with the anode functional layer;

a samarium doped CeO₂ (SDC) electrolyte layer disposed on top of and in contact with the ScCeSZ electrolyte layer; and

a cathode layer disposed on top of and in contact with the SDC electrolyte layer.

9. A solid oxide fuel cell comprising:

an anode support;

an NiO—

ScCeSZ anode functional layer disposed on top and in contact with the anode support;

a ScCeSZ electrolyte layer, from about 1.5 μ

m to about 2.5 μ

m in thickness, disposed on top of and in contact with the anode functional layer;

a samarium doped CeO₂ (SDC) electrolyte layer, from about 9.5 μ

m to about 10.5 μ

m in thickness, disposed on top of and in contact with the ScCeSZ electrolyte layer; and

a cathode layer disposed on top of and in contact with the SDC electrolyte layer.