Sensitivity of performance and degradation measurements on AMTEC electrodes in sodium exposure test cells to experiment conditions

Michael Schuller, Brad Fiebig, Patricia Hudson, Alicia Williams

Research output: Contribution to journalArticle

Abstract

In this paper we discuss performance and degradation measurements made on AMTEC electrodes in sodium exposure test cells. We measured electrode temperatures, sodium pool temperatures, and apparent charge transfer resistance values, from which we derived normalized exchange current density (B) values for WRh, MoRe, Re, and Ir electrodes. Electrode temperatures ranged from 600°C to 900°C, while sodium pool temperatures ranged from 190°C to 340°C. In general, the B values for WRh, MoRe, and Re samples were in the same range, while the B values for Ir were lower. B values generally increased linearly with increasing sodium pool temperature.

Original languageEnglish
Pages (from-to)704-709
Number of pages6
JournalProceedings of the Intersociety Energy Conversion Engineering Conference
Volume1
Publication statusPublished - 2000
Externally publishedYes

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Sodium
Degradation
Electrodes
Experiments
Temperature
Charge transfer
Current density

ASJC Scopus subject areas

  • Fuel Technology
  • Electrical and Electronic Engineering

Cite this

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abstract = "In this paper we discuss performance and degradation measurements made on AMTEC electrodes in sodium exposure test cells. We measured electrode temperatures, sodium pool temperatures, and apparent charge transfer resistance values, from which we derived normalized exchange current density (B) values for WRh, MoRe, Re, and Ir electrodes. Electrode temperatures ranged from 600°C to 900°C, while sodium pool temperatures ranged from 190°C to 340°C. In general, the B values for WRh, MoRe, and Re samples were in the same range, while the B values for Ir were lower. B values generally increased linearly with increasing sodium pool temperature.",
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AB - In this paper we discuss performance and degradation measurements made on AMTEC electrodes in sodium exposure test cells. We measured electrode temperatures, sodium pool temperatures, and apparent charge transfer resistance values, from which we derived normalized exchange current density (B) values for WRh, MoRe, Re, and Ir electrodes. Electrode temperatures ranged from 600°C to 900°C, while sodium pool temperatures ranged from 190°C to 340°C. In general, the B values for WRh, MoRe, and Re samples were in the same range, while the B values for Ir were lower. B values generally increased linearly with increasing sodium pool temperature.

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