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

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

doi:10.1023/B:JMSC.0000034151.93222.18

Preparation and transport properties of aqueous sol-gel synthesized NaCo₂O_4-δ

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We have successfully prepared thermoelectric materials NaCo ₂O_4-δ at lower temperature (700°C) using aqueous sol-gel methods. We find that the electrical resistivity and thermopower of NaCo₂O_4-δ depend strongly on the sintering temperature and partial pressure of oxygen. The oxygen content of NaCo ₂O_4-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 language	English
Pages (from-to)	4569-4573
Number of pages	5
Journal	Journal of Materials Science
Volume	39
Issue number	14
DOIs	https://doi.org/10.1023/B:JMSC.0000034151.93222.18
Publication status	Published - 2004 Jul 15

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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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.",

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T1 - Preparation and transport properties of aqueous sol-gel synthesized NaCo2O4-δ

AU - Liu, Chia-Jyi

AU - Liao, J. Y.

AU - Wu, T. W.

AU - Jen, B. Y.

PY - 2004/7/15

Y1 - 2004/7/15

N2 - 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.

AB - 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.

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