The Effect of Rh and Sr Substitution on the Thermoelectric Performance of LaCoO 3
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1267-DD11-02
The Effect of Rh and Sr Substitution on the Thermoelectric Performance of LaCoO3 Kyei-Sing Kwong1, Andrew E. Smith2, and M. A. Subramanian2 1 National 2
Energy Technology Laboratory, Albany OR 97321 Department of Chemistry, Oregon State University, Corvallis, OR 97330
ABSTRACT A series of LaCo1-xRhxO3 (x=0-1) samples and La1-ySryCo1-xRhxO3 (y = 0.05, 0.15 and x = 0.1-0.3) samples were prepared to study the effect of Rh substituion for Co in the four component system and Sr substitution for La in the five component system on the crystal structure and thermoelectric performance of the LaCoO3. At Rh substitution for Co of x=0.2 greater, the crystal structure shifts from rhombohederal (LaCoO3) to orthorhombic (LaRhO3). Thermoelectric evaluation revealed that Rh doped samples (0.3
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