Abstract:
The conductivity of several perovskite-type and similar perovskite-type oxide materials was investigated. The experimental results showed that the conductivities of La
0.8Sr
0.2MnO
3, La
0.8Sr
0.2 Ni
0.1Mn
0.9O
3, La
0.8Sr
0.2 Ce
0.1Mn
0.9O
3 and SrFe
0.5Co
0.5O
3 are approximative and all arrive at 10
-1 S·cm
-1. LaLiMnO
y and LaLi
0.5MnO
y, whose stabilities in molten carbonate are excellent, are different in conductivity. The former is more than 1 S·cm
-1, which meets the need of cathode materials of MCFC, and the latter is only 10
-2 S·cm
-1. A much higher activation energy of 0.191 eV should be the reason that the conductivity of LaLi
0.5MnO
y is lower.
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