### Abstract

Temperature distribution and thermal stress in a sodium beta prime -alumina solid electrolyte under conditions of sodium ion transport are calculated using finite element method to clarify the Mode I degradation. A critical current density determined by the thermal stress is about 15A/cm**2 for the typical beta prime -alumina plate with 2 mm thickness in a sodium/sodium cell, even if no substantial crack exists at the surface of the beta prime -alumina. It is also shown that there is a formation of a high resistance layer at the surface of the beta prime -alumina, a partial formation of an electrically insulating film between the beta prime -alumina and sodium interface due to low wettability and/or the existence of the crack reduce the critical current density.

Original language | English |
---|---|

Title of host publication | Proceedings - The Electrochemical Society |

Editors | Albert R. Landgrebe, Robert D. Weaver, Rajat K. Sen |

Publisher | Electrochemical Soc |

Pages | 163-175 |

Number of pages | 13 |

Volume | 87-5 |

Publication status | Published - 1987 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Engineering(all)

### Cite this

*Proceedings - The Electrochemical Society*(Vol. 87-5, pp. 163-175). Electrochemical Soc.

**INVESTIGATION ON TEMPERATURE DISTRIBUTION AND THERMAL STRESS OF BETA prime -ALUMINA UNDER CONDITIONS OF SODIUM ION TRANSPORT.** / Kawamoto, Hiroyuki.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Proceedings - The Electrochemical Society.*vol. 87-5, Electrochemical Soc, pp. 163-175.

}

TY - GEN

T1 - INVESTIGATION ON TEMPERATURE DISTRIBUTION AND THERMAL STRESS OF BETA prime -ALUMINA UNDER CONDITIONS OF SODIUM ION TRANSPORT.

AU - Kawamoto, Hiroyuki

PY - 1987

Y1 - 1987

N2 - Temperature distribution and thermal stress in a sodium beta prime -alumina solid electrolyte under conditions of sodium ion transport are calculated using finite element method to clarify the Mode I degradation. A critical current density determined by the thermal stress is about 15A/cm**2 for the typical beta prime -alumina plate with 2 mm thickness in a sodium/sodium cell, even if no substantial crack exists at the surface of the beta prime -alumina. It is also shown that there is a formation of a high resistance layer at the surface of the beta prime -alumina, a partial formation of an electrically insulating film between the beta prime -alumina and sodium interface due to low wettability and/or the existence of the crack reduce the critical current density.

AB - Temperature distribution and thermal stress in a sodium beta prime -alumina solid electrolyte under conditions of sodium ion transport are calculated using finite element method to clarify the Mode I degradation. A critical current density determined by the thermal stress is about 15A/cm**2 for the typical beta prime -alumina plate with 2 mm thickness in a sodium/sodium cell, even if no substantial crack exists at the surface of the beta prime -alumina. It is also shown that there is a formation of a high resistance layer at the surface of the beta prime -alumina, a partial formation of an electrically insulating film between the beta prime -alumina and sodium interface due to low wettability and/or the existence of the crack reduce the critical current density.

UR - http://www.scopus.com/inward/record.url?scp=0023537103&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023537103&partnerID=8YFLogxK

M3 - Conference contribution

VL - 87-5

SP - 163

EP - 175

BT - Proceedings - The Electrochemical Society

A2 - Landgrebe, Albert R.

A2 - Weaver, Robert D.

A2 - Sen, Rajat K.

PB - Electrochemical Soc

ER -