Project No: FE0009652
Performer: Georgia Tech Research Corporation
Shailesh Vora Technology Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940, MS 922-204 Pittsburgh, PA 15236-0940 (412) 386-7515 firstname.lastname@example.org Joseph Stoffa Project Manager National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880, MS PO3B Morgantown, WV 26507-0880 (304) 285-0285 email@example.com Meilin Liu Principal Investigator Georgia Tech Research Corporation School of Materials Science and Engineering 771 Ferst Drive Atlanta, GA 30332 (404) 894-6114 firstname.lastname@example.org
DOE Share: $500,000.00
Performer Share: $125,000.00
Total Award Value: $625,000.00
Performer website: Georgia Tech Research Corporation - http://www.gatech.edu
The Georgia Institute of Technology (Georgia Tech) will use specially-designed electrodes and cells, such as electrodes of thin films and patterned electrodes, to study the electrochemical response of lanthanum strontium cobalt ferrite (LSCF) cathodes under realistic operating conditions (ROC), to probe and map contaminants on the LSCF, and to characterize the correlation between electrochemical performance and microstructure/morphology of LSCF cathodes as well as their evolution over time. A range of characterization tools will be used to study the chemical and structural changes during fuel cell operation. Electrochemical techniques, such as impedance and DC polarization, will be intensively applied to characterize the cathode performance, which will be correlated with the structural and compositional evolution of the LSCF cathode under ROC. Proper characterization, modeling techniques, and prediction tools will be used to help in formulating an effective strategy to mitigate the stability issues and predict new catalyst materials that can enhance the stability of LSCF. Finally, the performance and stability of the modified LSCF cathode will be validated in commercially available cells under ROC.
Program Background and Project Benefits
This project focuses on characterizing the degradation mechanism of lanthanum strontium cobalt ferrite (LSCF) cathodes under realistic operating conditions (ROC), aiming to establish the scientific basis for the design of new materials and electrode structures to mitigate stability issues. Improved cell/stack life and performance will reduce operating cost and increase efficiency, resulting in reduction in the cost of electricity and reduction of CO2 emissions from the entire platform. Specifically, this project will characterize and correlate the microstructure, morphology, and chemistry behavior of LSCF cathodes with their electrochemical behavior under ROC and suggest new cathode materials through modeling and simulation.
Project Scope and Technology Readiness Level
The objective of the proposed work is to systematically characterize the degradation mechanism of lanthanum strontium cobalt ferrite (LSCF) cathodes under realistic operating conditions (ROC). The scope encompasses research necessary establish the scientific basis for rational design of new SOFC materials and electrode structures to mitigate the stability issues caused by the contaminants commonly encountered under ROC. The microstructure, morphology, and chemistry of LSCF cathodes will be carefully characterized and correlated with their electrochemical behavior under ROC to unravel the degradation mechanism. In particular, in situ and ex situ characterization of surface morphology and topography via atomic force microscopy, surface species via Raman spectroscopy, and surface phases via X-ray diffraction and Raman spectroscopy will be performed as a function of time. The well-defined cathode configuration will provide a unique platform for morphology observation, composition analysis, and in situ characterization. The resulting mechanistic understanding will guide the formulation of an effective strategy to mitigate the stability issues. Then multi-scale modeling and simulation will be used to suggest new cathode materials for experimental verification.
The Technology Readiness Level (TRL) assessment identifies the current state of readiness of the key technologies being developed under the DOE’s Clean Coal Research Program. In FY 12, this project was not assessed. The TRL assessment process and its results including definition and description of the levels may be found in the "2012 Technology Readiness Assessment-Analysis of Active Research Portfolio".