Manufacturing cost remains one of the major issues facing the solid oxide fuel cell (SOFC) industry. In the anode supported SOFC design, the cermet anode constitutes around 90% of the total material required to build a cell, making the technology very sensitive to anode raw material price. A new patent-pending process called “nickel yttria reaction-sintered zirconia (NiYRSZ)” has been developed for manufacturing SOFC anodes at a fraction of the cost. Typically, the solid component of the anode consists of about 50/50 volume percent nickel and 8 mole percent yttria stabilized zirconia, the latter being a rather costly material. It was discovered that zirconia and yttria powders sintered in the presence of nickel oxide readily form the cubic phase at moderate temperature. Cells manufactured using this process show excellent microstructures for anode supports: a strong bond between the electrolyte and the anode, and a high porosity without addition of pore formers. The strength of the anode was 100 MPa making the material equivalent or slightly superior to an anode fabricated with the traditional NiO/8YSZ material of similar porosity. The resistivity of the material was measured at 850°C and found to be less than 2 mΩ·cm. Cell performance was also compared to cells manufactured with traditional material. Every indication is that SOFC anodes fabricated with this new method perform as well as anodes made with the conventional material set.
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ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
June 16–18, 2008
Denver, Colorado, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4318-1
PROCEEDINGS PAPER
Development of Low-Cost Anode Material for Solid Oxide Fuel Cells
Dan Storjohann
Dan Storjohann
Colorado School of Mines, Golden, CO
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Sophie Menzer
CoorsTek Inc., Golden, CO
Grover Coors
CoorsTek Inc., Golden, CO
Dustin Beeaff
CoorsTek Inc., Golden, CO
Dan Storjohann
Colorado School of Mines, Golden, CO
Paper No:
FuelCell2008-65099, pp. 33-38; 6 pages
Published Online:
June 22, 2009
Citation
Menzer, S, Coors, G, Beeaff, D, & Storjohann, D. "Development of Low-Cost Anode Material for Solid Oxide Fuel Cells." Proceedings of the ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. Denver, Colorado, USA. June 16–18, 2008. pp. 33-38. ASME. https://doi.org/10.1115/FuelCell2008-65099
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