Fundamental study on the electrodes for alkali metal thermoelectric converter. (2nd Report, impedance measurement and generating characteristics)

Kotaro Tanaka, Akira Negishi, Ken Nozaki, Toshihisa Masuda

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A.C. impedance measurement on the alkali metal thermoelectric converter (AMTEC) has been conducted under D.C. polarized conditions in the temperature range from 890-1123 K. The obtained data have been analyzed in the complex impedance plane in terms of an equivalent circuit for the AMTEC system. The charge transfer resistance at the interface between the beta″-alumina solid electrolyte (BASE) and porous molybdenum electrodes has been evaluated and approximated by the introduced electrochemical model. The calculated current-voltage curves including the effect of the charge transfer resistance show good agreement with the measured data. The generating characteristics of the AMTEC can be completely predicted by this method, which may be useful for further studies on more efficient AMTEC cells. The contributions of BASE ionic conduction, contact resistance and mass transport through the porous electrode are also discussed.

Original languageEnglish
Pages (from-to)4229-4234
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume57
Issue number544
Publication statusPublished - 1991 Dec
Externally publishedYes

Fingerprint

impedance measurement
Alkali metals
alkali metals
converters
Electrodes
electrodes
Solid electrolytes
solid electrolytes
Charge transfer
Alumina
aluminum oxides
charge transfer
Ionic conduction
Contact resistance
contact resistance
equivalent circuits
Equivalent circuits
Molybdenum
molybdenum
alternating current

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

@article{3b3e27d48884427db69be103cc227a44,
title = "Fundamental study on the electrodes for alkali metal thermoelectric converter. (2nd Report, impedance measurement and generating characteristics)",
abstract = "A.C. impedance measurement on the alkali metal thermoelectric converter (AMTEC) has been conducted under D.C. polarized conditions in the temperature range from 890-1123 K. The obtained data have been analyzed in the complex impedance plane in terms of an equivalent circuit for the AMTEC system. The charge transfer resistance at the interface between the beta″-alumina solid electrolyte (BASE) and porous molybdenum electrodes has been evaluated and approximated by the introduced electrochemical model. The calculated current-voltage curves including the effect of the charge transfer resistance show good agreement with the measured data. The generating characteristics of the AMTEC can be completely predicted by this method, which may be useful for further studies on more efficient AMTEC cells. The contributions of BASE ionic conduction, contact resistance and mass transport through the porous electrode are also discussed.",
author = "Kotaro Tanaka and Akira Negishi and Ken Nozaki and Toshihisa Masuda",
year = "1991",
month = "12",
language = "English",
volume = "57",
pages = "4229--4234",
journal = "Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B",
issn = "0387-5016",
publisher = "Japan Society of Mechanical Engineers",
number = "544",

}

TY - JOUR

T1 - Fundamental study on the electrodes for alkali metal thermoelectric converter. (2nd Report, impedance measurement and generating characteristics)

AU - Tanaka, Kotaro

AU - Negishi, Akira

AU - Nozaki, Ken

AU - Masuda, Toshihisa

PY - 1991/12

Y1 - 1991/12

N2 - A.C. impedance measurement on the alkali metal thermoelectric converter (AMTEC) has been conducted under D.C. polarized conditions in the temperature range from 890-1123 K. The obtained data have been analyzed in the complex impedance plane in terms of an equivalent circuit for the AMTEC system. The charge transfer resistance at the interface between the beta″-alumina solid electrolyte (BASE) and porous molybdenum electrodes has been evaluated and approximated by the introduced electrochemical model. The calculated current-voltage curves including the effect of the charge transfer resistance show good agreement with the measured data. The generating characteristics of the AMTEC can be completely predicted by this method, which may be useful for further studies on more efficient AMTEC cells. The contributions of BASE ionic conduction, contact resistance and mass transport through the porous electrode are also discussed.

AB - A.C. impedance measurement on the alkali metal thermoelectric converter (AMTEC) has been conducted under D.C. polarized conditions in the temperature range from 890-1123 K. The obtained data have been analyzed in the complex impedance plane in terms of an equivalent circuit for the AMTEC system. The charge transfer resistance at the interface between the beta″-alumina solid electrolyte (BASE) and porous molybdenum electrodes has been evaluated and approximated by the introduced electrochemical model. The calculated current-voltage curves including the effect of the charge transfer resistance show good agreement with the measured data. The generating characteristics of the AMTEC can be completely predicted by this method, which may be useful for further studies on more efficient AMTEC cells. The contributions of BASE ionic conduction, contact resistance and mass transport through the porous electrode are also discussed.

UR - http://www.scopus.com/inward/record.url?scp=0026384237&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026384237&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0026384237

VL - 57

SP - 4229

EP - 4234

JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

SN - 0387-5016

IS - 544

ER -