Interfacial material for solid oxide fuel cell
Abstract
Solid oxide fuel cells having improved low-temperature operation are disclosed. In one embodiment, an interfacial layer of terbia-stabilized zirconia is located between the air electrode and electrolyte of the solid oxide fuel cell. The interfacial layer provides a barrier which controls interaction between the air electrode and electrolyte. The interfacial layer also reduces polarization loss through the reduction of the air electrode/electrolyte interfacial electrical resistance. In another embodiment, the solid oxide fuel cell comprises a scandia-stabilized zirconia electrolyte having high electrical conductivity. The scandia-stabilized zirconia electrolyte may be provided as a very thin layer in order to reduce resistance. The scandia-stabilized electrolyte is preferably used in combination with the terbia-stabilized interfacial layer. The solid oxide fuel cells are operable over wider temperature ranges and wider temperature gradients in comparison with conventional fuel cells.
- Inventors:
-
- Essex Junction, VT
- Pittsburgh, PA
- Murrysville, PA
- Issue Date:
- Research Org.:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- OSTI Identifier:
- 872706
- Patent Number(s):
- 5993989
- Assignee:
- Siemens Westinghouse Power Corporation (Orlando, FL)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- FC21-91MC28055
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- interfacial; material; solid; oxide; fuel; cell; cells; improved; low-temperature; operation; disclosed; embodiment; layer; terbia-stabilized; zirconia; located; air; electrode; electrolyte; provides; barrier; controls; interaction; reduces; polarization; loss; reduction; electrical; resistance; comprises; scandia-stabilized; conductivity; provided; reduce; preferably; combination; operable; wider; temperature; ranges; gradients; comparison; conventional; temperature ranges; interfacial layer; fuel cell; temperature operation; cell comprises; temperature gradient; air electrode; temperature range; fuel cells; oxide fuel; solid oxide; electrical resistance; electrical conductivity; stabilized zirconia; zirconia electrolyte; layer provides; temperature gradients; conventional fuel; terbia-stabilized zirconia; improved low-temperature; low-temperature operation; /429/427/
Citation Formats
Baozhen, Li, Ruka, Roswell J, and Singhal, Subhash C. Interfacial material for solid oxide fuel cell. United States: N. p., 1999.
Web.
Baozhen, Li, Ruka, Roswell J, & Singhal, Subhash C. Interfacial material for solid oxide fuel cell. United States.
Baozhen, Li, Ruka, Roswell J, and Singhal, Subhash C. Fri .
"Interfacial material for solid oxide fuel cell". United States. https://www.osti.gov/servlets/purl/872706.
@article{osti_872706,
title = {Interfacial material for solid oxide fuel cell},
author = {Baozhen, Li and Ruka, Roswell J and Singhal, Subhash C},
abstractNote = {Solid oxide fuel cells having improved low-temperature operation are disclosed. In one embodiment, an interfacial layer of terbia-stabilized zirconia is located between the air electrode and electrolyte of the solid oxide fuel cell. The interfacial layer provides a barrier which controls interaction between the air electrode and electrolyte. The interfacial layer also reduces polarization loss through the reduction of the air electrode/electrolyte interfacial electrical resistance. In another embodiment, the solid oxide fuel cell comprises a scandia-stabilized zirconia electrolyte having high electrical conductivity. The scandia-stabilized zirconia electrolyte may be provided as a very thin layer in order to reduce resistance. The scandia-stabilized electrolyte is preferably used in combination with the terbia-stabilized interfacial layer. The solid oxide fuel cells are operable over wider temperature ranges and wider temperature gradients in comparison with conventional fuel cells.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}
Works referenced in this record:
Comparison of Power Densities and Chemical-Potential Variation in SOFC’s with Multi-Layer and Single-Layer Oxide Electrolytes
journal, January 1997
- Soral, Prashant
- ECS Proceedings Volumes, Vol. 1997-40, Issue 1