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Yttria-stabilized zirconia (YSZ) is the most commonly used solid electrolyte for solid oxide fuel cells (SOFCs) and oxygen sensors. YSZ exhibits high oxygen-ionic conductivity while blocking electronic conduction. YSZ particles may be synthesized from yttrium nitrate or isopropoxide by sol gel method. YSZ nanoparticles may be prepared in supercritical water (SCW). YSZ nanoparticles of different sizes with varying % mol of yttria may be obtained by CO2 laser based continuous/pulsed laser vaporization method.
Zirconium(IV) oxide-yttria stabilized (YSZ) (<100 nm particle size) is an oxygen ion conductor with properties such as good ionic conductivity and high physiochemical stability. Its other properties include excellent shock resistance, low thermal conductivity and a high coefficient of thermal expansion.
|
No. |
Item |
Unit |
Specification |
Method |
Result |
|
1. |
Main components l ZrO2+HfO2 l Y2O3 |
% % |
Balance 13-14 |
XRF,ARL Perfom'X 4200,ThermoFisher |
86.07 13.93 |
|
2. |
Impurities l Fe2O3 l SiO2 l TiO2 l Al2O3 |
ppm |
Max.100 |
ICP,Optima 2000DC,Perkin Elmer |
20 53 55 15 |
|
3. |
Loss on ignition |
% |
Max.2 |
Gravimetry,1100ºC |
0.85 |
|
4. |
LOI |
% |
Max.1 |
Gravimetry |
|
|
5. |
Particle size D50 |
μm |
0.3-0.4 |
Laser PSA,Mastersize 2000,Malvem |
0.318 |
|
6. |
Specific surface area |
m2/g |
12-16 |
Bet,Monosorb, Quantachrome |
12.06 |
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