Mitigation of Chromium Impurity Effects and Degradation in Solid Oxide Fuel Cells: The Roles of Reactive Transport and Thermodynamics Email Page
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Performer:  Trustees of Boston University Location:  Boston, MA
Project Duration:  10/01/2014 – 09/30/2018 Award Number:  FE0023325
Technology Area:  Solid Oxide Fuel Cells Total Award Value:  $1,000,000
Key Technology:  Cell Technology DOE Share:  $800,000
Performer Share:  $200,000

Compositionally graded cathodes as a potential<br/>solution to mitigate chromium impurity effects
Compositionally graded cathodes as a potential
solution to mitigate chromium impurity effects

Project Description

Boston University will team with FuelCell Energy to understand the detailed mechanisms of chromium poisoning in the cathode of solid oxide fuel cells (SOFCs) and provide solutions that eliminate or mitigate chromium poisoning in cathodes, reducing or eliminating its effects on SOFC power systems. The project includes fabrication and testing of cells, modeling the thermodynamics and transport phenomena of chromium poisoning, and implementation of solutions to chromium poisoning at the single-cell level.

Project Benefits

The formation of chromates (and chromites) at the interfaces degrades the performance of solid oxide fuel cells. The chromates form due to the reaction of the chromium oxide scale on the surface of the interconnect, which then migrate to the triple phase boundaries and deposit there, leading to performance degradation and cascading failure of the cell. This work will provide solutions that mitigate chromium poisoning and increase the overall performance of SOFC power systems.

Presentations, Papers, and Publications

Contact Information

Federal Project Manager Steven Markovich:
Technology Manager Shailesh Vora:
Principal Investigator Srikanth Gopalan: