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Thermally activated and non-activated charge transport processes in the oxides NaxMo2

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Abstract

The electrical properties of NaxM1+yO2 (M=Mn,Co) were measured as a function of temperature under conditions of thermodynamic equilibrium for a quenched defect structure. The results of electrochemical studies of NaxM1+yO2 are also presented. A correlation is demonstrated between the structures of the ionic and electronic defects in these materials and the potential changes of the cathode in Na/Na+/NaxM1+yO2.

Zusammenfassung

Unter den Bedingungen eines thermodynamischen Gleichgewichtes wurden die elektrischen Eigenschaften von NaxM1+yO2 (mitM=Mn, Co) als Funktion der Temperatur bestimmt. Zusätzlich wurden die Ergebnisse der elektrochemischen Untersuchungen von NaxM1+yO2 dargelegt. Es wird eine Korrelation zwischen der Struktur von Ionen- und Elektronendefekten dieser Substanzen und der Potentialänderung an der Kathode in einer Na/Na+/NaxM1+yO2 Zelle gezeigt.

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Authors and Affiliations

  1. Institute of Materials Science, Academy of Mining and Metallurgy, 30-059, Cracow, Poland

    J. Molenda

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  1. J. Molenda
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Additional information

The author is grateful to Prof. S. Mrowec and Dr. A. Stoklosa for helpful discussions.

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Molenda, J. Thermally activated and non-activated charge transport processes in the oxides NaxMo2 . Journal of Thermal Analysis 38, 2171–2179 (1992). https://doi.org/10.1007/BF01979631

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