Development of thermoelectric module based on dense Ca3Co 4O9 and Zn0.98Al0.02O legs

Paolo Mele, Hiroyuki Kamei, Hiroyuki Yasumune, Kaname Matsumoto, Koji Miyazaki

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Ca3Co4O9 (p-type) and Zn 0.98Al0.02O (n-type) pellets were prepared by conventional sintering (CS) and Spark Plasma sintering (SPS) starting from the oxides. The best p-type sample was SPS Ca3Co4O9 obtained from pre-sintered pellets, with electrical conductivity σ = 144 S/cm and Seebeck coefficient S = 172 μV/K at 800 °C, while thermal conductivity κ = 2.00 W/m×K and figure of merit ZT = 0.23. The best n-type sample was CS Zn0.98Al0.02O showing σ = 83 S/cm and S = -268 μV/K at 800 °C, while = 5.03 W/m×K and ZT = 0.127. The output power of a module based on SPS Ca3Co4O9 and CS Zn0.98Al0.02O legs was 2.26 mW (with T = 500 °C, ΔT = 248 °C).

Original languageEnglish
Pages (from-to)389-397
Number of pages9
JournalMetals and Materials International
Volume20
Issue number2
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

Fingerprint

Spark plasma sintering
sintering
Sintering
modules
sparks
Seebeck coefficient
pellets
Oxides
Thermal conductivity
Seebeck effect
figure of merit
thermal conductivity
electrical resistivity
oxides
output
coefficients

Keywords

  • electrical conductivity resistivity thermopower
  • Oxides
  • sintering
  • thermal conductivity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Cite this

Development of thermoelectric module based on dense Ca3Co 4O9 and Zn0.98Al0.02O legs. / Mele, Paolo; Kamei, Hiroyuki; Yasumune, Hiroyuki; Matsumoto, Kaname; Miyazaki, Koji.

In: Metals and Materials International, Vol. 20, No. 2, 01.01.2014, p. 389-397.

Research output: Contribution to journalArticle

Mele, Paolo ; Kamei, Hiroyuki ; Yasumune, Hiroyuki ; Matsumoto, Kaname ; Miyazaki, Koji. / Development of thermoelectric module based on dense Ca3Co 4O9 and Zn0.98Al0.02O legs. In: Metals and Materials International. 2014 ; Vol. 20, No. 2. pp. 389-397.
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AU - Miyazaki, Koji

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