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Synthesis And Properties Of Ni-YSZ Cermet: Anode Material For Solid Oxide Fuel Cells
| Content Provider | Indian Institute of Science (IISc) |
|---|---|
| Author | Aruna, S. T. Muthuraman, M. Patil, K. C. |
| Copyright Year | 1998 |
| Abstract | Nickel-yttria stabilized zirconia (Ni-YSZ) cermet with various vol.% of Ni has been prepared by the combustion of $Ni(NO_3)_2, Y(NO,)_3, ZrO(NO_3)_2$ and carbohydrazide followed by hydrogen reduction at 800ÀC, 2 h. The as-formed cermet powders were fine with surface area in the range of 27-32 $m^2 g$ with an average agglomerated particle size in the range of 0.25-0.8 $\mu m$. The samples could be sintered to the required density ( 70% theoretical density) with porous microstructure. At lower Ni content ( 30 vol.%) the conductivity increases with increasing temperature whereas at higher nickel content the cermets exhibit metallic behaviour. The thermal expansion of the cermets increases with increasing Ni content. The 30NJ-YSZ cermet with high electrical conductivity (40 S cm) and low thermal expansion coefficient $(11.64X 10^{-6} K^{-1})$ appears to be compatible with the electrolyte (YSZ) for SOFC application. |
| File Format | |
| Journal | PeerReviewed |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 1998-08-01 |
| Access Restriction | Authorized |
| Subject Keyword | Inorganic & Physical Chemistry |
| Content Type | Text |
| Resource Type | Article |
