Preparation and transport properties of aqueous sol-gel synthesized NaCo2O4-δ

Chia-Jyi Liu, J. Y. Liao, T. W. Wu, B. Y. Jen

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We have successfully prepared thermoelectric materials NaCo 2O4-δ at lower temperature (700°C) using aqueous sol-gel methods. We find that the electrical resistivity and thermopower of NaCo2O4-δ depend strongly on the sintering temperature and partial pressure of oxygen. The oxygen content of NaCo 2O4-δ is found to decrease with increasing sintering temperature. The sample prepared at the combination of 700°C and pure flowing oxygen exhibits the highest value of power factor.

Original languageEnglish
Pages (from-to)4569-4573
Number of pages5
JournalJournal of Materials Science
Volume39
Issue number14
DOIs
Publication statusPublished - 2004 Jul 15

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Transport properties
Sol-gels
Oxygen
Sintering
Thermoelectric power
Partial pressure
Temperature
Sol-gel process

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Liu, Chia-Jyi ; Liao, J. Y. ; Wu, T. W. ; Jen, B. Y. / Preparation and transport properties of aqueous sol-gel synthesized NaCo2O4-δ. In: Journal of Materials Science. 2004 ; Vol. 39, No. 14. pp. 4569-4573.
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Preparation and transport properties of aqueous sol-gel synthesized NaCo2O4-δ. / Liu, Chia-Jyi; Liao, J. Y.; Wu, T. W.; Jen, B. Y.

In: Journal of Materials Science, Vol. 39, No. 14, 15.07.2004, p. 4569-4573.

Research output: Contribution to journalArticle

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