CCS and Power Systems

Advanced Energy Systems - Solid Oxide Fuel Cells

Mechanistic Enhancement of SOFC Cathode Durability

Performer: University of Maryland

Project No: FE0009084

Project Scope and Technology Readiness Level

This work will quantify the effect of real-world air contaminants on solid-oxide fuel cell (SOFC) cathodes, and then propose testable modifications to the cathode structure that enhance contaminant resistance while maintaining desirous properties. Using a dual focused ion beam/scanning electron microscope approach, UMD will quantify in three dimensions (3-D) the microstructural changes of cathode samples, both standardized and from each of the SECA Industry Teams. This includes changes in triple-phase boundary density, phase connectivity, and tortuosity (a metric related to diffusivity). Heterogeneous catalysis methods will be used to elucidate the cathode oxygen reduction reaction (ORR) mechanism and determine how contaminants affect the ORR as a function of temperature, time, and composition, and will use an integrated in-situ system that allows simultaneous 18O-isotope exchange and electro-analytical characterization of button cells under applied current/voltage conditions.

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