Low-Cost, Durable, Contaminant-Tolerant Cathodes for Solid Oxide Fuel Cells

 

Schematic for a high-performance cathode consists<br/>of the state-of-the-art cathode backbone (e.g.,<br/>LSCF) and a durable catalyst against various<br/>contaminants, making effective use of the best<br/>properties of two different materials (backbone and catalyst).
Schematic for a high-performance cathode consists
of the state-of-the-art cathode backbone (e.g.,
LSCF) and a durable catalyst against various
contaminants, making effective use of the best
properties of two different materials (backbone and catalyst).
Performer: 
Georgia Tech Research Corporation
Website:  Georgia Tech Research Corp.
Award Number:  FE0026106
Project Duration:  10/01/2015 – 07/31/2017
Total Award Value:  $250,000
DOE Share:  $200,000
Performer Share:  $50,000
Technology Area:  Solid Oxide Fuel Cells
Key Technology:  Cell Technology
Location:  Atlanta, Georgia

Project Description

Georgia Institute of Technology (Georgia Tech) and Materials and Systems Research, Inc. (MSRI) will team to achieve rational design of robust and durable cathode materials/structures with high tolerance to several types of contaminants commonly encountered under realistic solid oxide fuel cell (SOFC) operating conditions. The team will use model cells with carefully designed electrodes to probe and map contaminants on different sites of electrode surfaces in order to correlate the electrochemical performance with the structure and composition evolution of the cathodes over time. A range of characterization tools will be used to study the chemical and structural changes of electrodes during fuel cell operation. Both experimental and modeling techniques will be used to help formulate an effective strategy to mitigate the stability issues and design new catalyst materials that may dramatically enhance the stability of the cathodes. The performance and stability of catalyst-modified cathodes will be validated in cells of different sizes under realistic operating conditions.

Project Benefits

The ultimate goal of the project is to develop durable catalyst-modified cathodes with demonstrated tolerance to contaminant poisoning through low-cost surface modification. The combination of the experimental and computational approaches employed in this research by the Georgia Tech team is an effective way to unravel the degradation mechanisms and achieve rational design of robust, lower-cost SOFC cathode materials with dramatically enhanced functionality and durability.

Contact Information

Federal Project Manager 
Arun Bose: arun.bose@netl.doe.gov
Technology Manager 
Shailesh Vora: shailesh.vora@netl.doe.gov
Principal Investigator 
Meilin Liu: meilin.liu@mse.gatech.edu
 

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