CCS and Power Systems

Advanced Energy Systems - Solid Oxide Fuel Cells

Fundamental Investigators and Rational Design of Durable, High-Performance Cathode Materials

Performer: Georgia Tech Research Corporation

Project No: FE0009652

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".

Project Details