Economical Route to Produce High Seebeck Coefficient Calcium Cobaltate for Bulk Thermoelectric Applications

Autor:	Hsin Wang, D. Ray Johnson, Sidney Lin, Jiri Selig, Hua-Tay Lin
Rok vydání:	2011
Předmět:	Materials science Thermal conductivity Phase (matter) Seebeck coefficient Specific surface area Thermoelectric effect Materials Chemistry Ceramics and Composites Analytical chemistry Mineralogy Figure of merit Particle size Thermoelectric materials
Zdroj:	Journal of the American Ceramic Society. 94:3245-3248
ISSN:	0002-7820
DOI:	10.1111/j.1551-2916.2011.04819.x
Popis:	Phase pure calcium cobaltate (Ca1.24Co1.62O3.86) was prepared by Self-propagating High-temperature Synthesis (SHS) followed by a short post heat treatment. Prepared powders were characterized by XRD for phase purity, and SEM for particle size, and distribution. Temperature histories at the center and on the surface of reaction pellet during the SHS process were monitored and recorded. Particle size of synthesized powders was reduced using a planetary mill to increase its specific surface area. Electrical conductivity, thermal conductivity, and Seebeck coefficient of the prepared power were measured and figure of merit was reported.
Databáze:	OpenAIRE
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