Investigation of Cathode Electrocatalytic Activity using Surface Engineered Thin Film Samples and High Temperature Physical Property Measurements
In this Final Technical Report, a summary of the technical output from the award DE-NT0004105 is given. First, the major goals and observations from the project are reviewed and then specific example results are presented as highlights. The surprising importance of microstructure on the surface chemical exchange coefficient in La 0.7Sr 0.3MnO 3 (LSM) was uncovered in this work and is re-emphasized in this report. Significant orientation and thickness dependencies of the surface exchange coefficient are correlated with microstructural effects, especially to the nature of the strain, dislocation content, and grain boundary population. We also illustrate similar microstructural effects are present in other SOFC cathode systems, including LSCF (La 1-xSrxCo 1-yFe yO 3) and La 2NiO 4 (LNO). Throughout the report, the relation to SOFC cathode performance is discussed.
- Publication Date:
- OSTI Identifier:
- DOE Contract Number:
- Resource Type:
- Technical Report
- Research Org:
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
- Sponsoring Org:
- Country of Publication:
- United States
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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