Enhancing High Temperature Anode Performance with 2 Degrees Anchoring Phases

 

Results of flexural strength testing of<br/>model anode structures comprised of<br/>Ni-YSZ (8%) and those doped with different<br/>amounts of aluminum titanate (ALT).
Results of flexural strength testing of
model anode structures comprised of
Ni-YSZ (8%) and those doped with different
amounts of aluminum titanate (ALT).
Performer: 
Montana State University
Website:  Montana State University
Award Number:  FE0026192
Project Duration:  10/01/2015 – 07/31/2017
Total Award Value:  $250,000
DOE Share:  $200,000
Performer Share:  $50,000
Technology Area:  Solid Oxide Fuel Cells
Key Technology:  Cell Technology
Location:  Bozeman, Montana

Project Description

Montana State University (MSU) will develop, characterize, and refine electrode preparation methods to mechanically strengthen the anode support structure and facilitate the binding of sub-micron nickel metal catalysts (diameter < 100 nm) to ion-conducting ceramic scaffolds. Researchers will accomplish this task through the addition of reactive materials in low concentrations that chemically join the percolated ion and electron conducting networks comprising solid oxide fuel cell (SOFC) cermet anodes while simultaneously immobilizing metal catalysts to their support. These 2° phase chemical anchors will serve two distinct purposes: (1) inhibit particle coarsening and other mechanisms that deactivate high surface area catalysts at high temperatures and (2) improve the electrode’s fracture toughness and, hence, flexural strength, thus conferring additional mechanical stability to the entire membrane electrode assembly.

Project Benefits

Key outcomes for this MSU project are the development of methods of fabricating SOFC anodes having high catalytic activity and improved mechanical/thermal stability. These desirable attributes will result from the formation of 2° phases that anchor sub-micron sized cermet metal catalysts to the ion conducting substrate, and conjoin the percolated electronic and ionic conducting networks. Phase I research, if successful, will produce results that can inform and advise commercial production of new anodes and anode materials for larger-scale and longer-term testing.

Contact Information

Federal Project Manager 
Joseph Stoffa: joseph.stoffa@netl.doe.gov
Technology Manager 
Shailesh Vora: shailesh.vora@netl.doe.gov
Principal Investigator 
Robert Walker: rawalker@chemistry.montana.edu
 

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