| SOFC Electrode Materials |
| Component |
Material compounds |
Composition |
Characteristic |
| Electrolyte |
ZrO2 compound
|
Y2O3 stabilized ZrO3
|
Standard material |
| |
|
Y2O3-ZrO2-Al2O3
|
High-strength |
| |
|
Sc2O3 stabilized ZrO2
|
High-conductivity |
| |
|
Sc2O3-ZrO2-Al2O3
|
Reduction of transition temperature |
| |
|
YSZ-Pr surf
|
Electron conductivity |
| |
CeO2 compound
|
(CeO2)0.3(SmO1.5)0.3
|
Actuation at low temperature |
| |
|
(CeO2)0.3(GdO1.5)0.2
|
|
| |
|
(CeO2)0.3(YO1.5)0.2
|
|
| |
Bi2O3 compound
|
(Bi2O3)0.3(SrO)0.2
|
|
| |
Ln2Ti2O7 compound
|
Ln2(TiZr)2O7
|
|
| |
(Ln : rare-earth element) |
(Ln=Sm, Gd, Y) |
|
| |
LnAlO3 compound
|
(LnCa)(AlGd)O3
|
|
| |
(Ln : rare-earth element) |
(Ln=Pr, Nd) |
|
| |
LaGaO3 compound
|
La0.3Sr0.2Ga0.3Mg0.2O3
|
High-conductivity |
| |
ACeO3 compound
|
BaCe0.3Y0.2O3-_
|
H+ ion conductor |
| |
(A=Ca, Ba) |
SrCe0.95Yb0.05O3-_
|
|
| |
|
Ba(CeGd)O3-_
|
|
| |
|
Ba(CeDy)O3-_
|
|
| Anode |
Ni compound |
Ni-YSZ |
Standard material |
| |
|
Ni-MgO-YSZ |
Long-term stabilization |
| |
|
Ni-TiO2-YSZ
|
|
| |
|
Ni-CeO2
|
Low overvoltage |
| |
|
Ni-(CeO2)0.3(SmO1.5)0.2
|
High-property modification |
| |
|
Ni-PrO2
|
|
| |
Ru compound |
Ru-YSZ |
Low overvoltage, High-property modification |
| |
TiO2 - YSZ compound
|
TiO2-YSZ
|
Stabilize under low oxygen partial pressure. |
| |
(LaCa)CrO3 compound
|
(La0.3Ca0.2)CrO3
|
High-property modification |
| Cathode |
LnMnO3 compound
|
(LaSr)MnO3
|
Standard material |
| |
|
(PrSr)MnO3
|
Low overvoltage at low temperature |
| |
|
LnAMnO3
|
Low cost (use La intermediate purification |
| |
|
(Ln=La, Pr, Ce, A=Ca, Sr) |
product) |
| |
|
{(La0.6Y0.4)0.3Sr0.2}MnO3
|
Reduction of thermal expansion coefficient |
| |
|
(GdA)MnO3 (A=Ca, Sr)
|
Reduction of reaction with YSZ |
| |
LnCoO3 compound
|
(LaSr)CoO3
|
High conductivity |
| |
|
(LaSr)(CoFe)O3
|
Low overvoltage at low temperature |
| |
|
(GdSr)CoO3
|
Reduction of reaction with YSZ |
| |
YFeO3 compound
|
(Yca)FeO3
|
Reduction of reaction with YSZ |
| Interconnector |
LnCrO3 compound
|
(LaA)(CrB)O3
|
Standard material |
| / Separator |
(Ln : rare-earth element) |
(A=Ca, Sr, B=Co, Ni) |
|
| |
|
La(CrMg)3
|
Low reduction of lattice expansion |
| |
|
(LaCa)(CrCoFeNi)O3
|
Improvement of sintering character |
| |
|
LnCrO3 (Ln=La, Ce, Pr)
|
Low cost |
| |
Cr compound |
(CrFe)5(Y2O3)1
|
Alloyed metal of low thermal expansion |
