Seebeck effect in a battery-type thermocell

Wataru Kobayashi, Akemi Kinoshita, Yutaka Moritomo

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5 Citations (Scopus)

Abstract

We demonstrated that battery-type thermocells, which consist of two paste-type electrodes with the same active material and electrolyte, show the Seebeck effect. The magnitudes of electrochemical Seebeck coefficient (S) of the thermocells with several layered oxides were evaluated: -12.7 μV/K for Na0.99CoO2, -29.7 μV/K for Na0.52MnO2, -22.4 μV/K for Na0.51Mn0.5Fe0.5O2, and -6.8 μV/K for LiCoO2. In the thermocell with Na0.99CoO2, time-dependence of the electromotive force (ΔV) at a constant temperature difference (ΔT) was well reproduced by a mean-field approach of the chemical potential (η) - Na+ concentration (x) relationship, indicating that the Na+ intercalation/deintercalation plays an intrinsic role in the electrochemical Seebeck effect.

Original languageEnglish
Article number073906
JournalApplied Physics Letters
Volume107
Issue number7
DOIs
Publication statusPublished - 2015 Aug 17
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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  • Cite this

    Kobayashi, W., Kinoshita, A., & Moritomo, Y. (2015). Seebeck effect in a battery-type thermocell. Applied Physics Letters, 107(7), [073906]. https://doi.org/10.1063/1.4928336