Thermoelectric Properties Enhancement of NaCo2O4 through Ca Atom Partial Substitution on Na Atom

Erwin Ermawan; Suhardjo Poertadji

doi:10.4028/www.scientific.net/AMR.1123.140

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1123Thermoelectric Properties Enhancement of NaCo2O4...

Thermoelectric Properties Enhancement of NaCo₂O₄ through Ca Atom Partial Substitution on Na Atom

Abstract:

Single phase samples of Na_1-xCa_xCo₂O₄ (with x = 0, 0.1, 0.2 and 0.3) are prepared by utilizing a solid state reaction process, and the Ca²⁺ substitution effect on thermoelectric properties is then observed. On the samples, the increment of Ca²⁺ substitution results in the increase of resistivity and thermo power properties. The Ca²⁺ substitution in NaCo₂O₄ reduces charge carriers of the samples. This phenomenon indicates that there are many holes in the samples and it is consistent with the positive sign of thermo power. It demonstrates that the Ca²⁺ substitution is effective to enhance thermoelectric properties.

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Advanced Materials Research (Volume 1123)

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140-144

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https://doi.org/10.4028/www.scientific.net/AMR.1123.140

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Online since:

August 2015

Authors:

Erwin Ermawan*, Suhardjo Poertadji

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Electrical Resistivity, Na_1-xCa_xCo₂O₄, Seebeck Coefficient, Thermo Power

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References

[1] C.M. Bhandari, D.M. Rowe, Optimization of carrier concentration, in: D.M. Rowe (Ed. ), CRC Handbook of Thermoelectrics, CRC Press, Boca Raton, (1995).

DOI: 10.1201/9781420049718.ch5

Google Scholar

[2] I. Terasaki, Y. Sasago and K. Uchinokura, Large thermoelectric power in NaCo2O4 single crystals, Phys. Rev. B 56 (1997) 12685.

Google Scholar

[3] T. Tanaka, S. Nakamura, and S. Iida, Observation of distinct metallic conductivity in NaCo2O4, Jpn. J. Appl. Phys. 33 (1994) L581- L582.

DOI: 10.1143/jjap.33.l581

Google Scholar

[4] I. Terasaki, Proceedings of the 18th International Conference Ion Thermoelectrics (ICT99), Baltimore, MD, USA 1999 (IEEE, Piscataway, 2000), pp.569-576.

Google Scholar

[5] V.M. Jansen and R. Hoppe, Notiz zur Kenntnis der Oxocobaltate des Natriums, Z. Anorg. Allg. Chem. 408 (1974) 104-106.

DOI: 10.1002/zaac.19744080203

Google Scholar

[6] K. Park, K.U. Jang, Improvement in high-temperature thermoelectric properties of NaCo2O4 through partial substitution of Ni for Co, Materials Letter 60, 1106-1110, (2005).

DOI: 10.1016/j.matlet.2005.10.086

Google Scholar

[7] C. Kittel, Introduction to Solid State Physics, John Wiley and Sons, Inc., New York, (1996) 72.

Google Scholar

[8] D. M. Rowe, CRC Handbook of Thermoelectrics, CRC Press, Boca Raton, FL, (1995).

Google Scholar

[9] G. Palsson and G. Kotliar, Thermoelectric response near the density driven Mott transition, Phys. Review, Letter. 80 (1998) 4775.

DOI: 10.1103/physrevlett.80.4775

Google Scholar

[10] J. Molenda, C. Delmas, P. Hagenmuller, Electronic and electrochemical properties of NaxCoO2−y cathode, Solid state ionics. 9-10 (1983) 431-435.

DOI: 10.1016/0167-2738(83)90271-0

Google Scholar

[11] G.D. Mahan, Good thermoelectrics, Solid State Physics. 51 (1998) 81-157.

Google Scholar

[12] T. Nagira, M. Ito, K. Katsuyama, K, Majima, H. Nagai, Alloys Compound 348, (2003) 263-269.

Google Scholar