Seebeck effect in a battery-type thermocell

Wataru Kobayashi; Akemi Kinoshita; Yutaka Moritomo

doi:10.1063/1.4928336

Seebeck effect in a battery-type thermocell

Wataru Kobayashi, Akemi Kinoshita, Yutaka Moritomo

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

8 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 Na_0.99CoO₂, -29.7 μV/K for Na_0.52MnO₂, -22.4 μV/K for Na_0.51Mn_0.5Fe_0.5O₂, and -6.8 μV/K for LiCoO₂. In the thermocell with Na_0.99CoO₂, 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 language	English
Article number	073906
Journal	Applied Physics Letters
Volume	107
Issue number	7
DOIs	https://doi.org/10.1063/1.4928336
Publication status	Published - 2015 Aug 17
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Seebeck effect in a battery-type thermocell",

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.",

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AU - Kobayashi, Wataru

AU - Kinoshita, Akemi

AU - Moritomo, Yutaka

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N2 - 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.

AB - 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.

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Seebeck effect in a battery-type thermocell

Abstract

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