Economical route to produce high seebeck coefficient calcium cobaltate for bulk thermoelectric applications

Jiri Selig, Sidney Lin, Hua Tay Lin, D. Ray Johnson, Hsin Wang

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Phase pure calcium cobaltate (Ca1.24Co1.62O 3.86) 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.

Original languageEnglish
Pages (from-to)3245-3248
Number of pages4
JournalJournal of the American Ceramic Society
Volume94
Issue number10
DOIs
StatePublished - Oct 2011

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