Factors Contributing To The Breakdown Of Sodium Beta Alumina

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Factors Contributing To The Breakdown Of Sodium Beta Alumina Solid Electrolytes

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Author : Andrew Celestine Buechele
language : en
Publisher:
Release Date : 1982

Factors Contributing To The Breakdown Of Sodium Beta Alumina Solid Electrolytes written by Andrew Celestine Buechele and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.

Factors Contributing To The Breakdown Of Sodium Beta Alumina

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Author :
language : en
Publisher:
Release Date : 1982

Factors Contributing To The Breakdown Of Sodium Beta Alumina written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.

Clarification of the breakdown process occurring during charge transfer in sodium beta alumina solid electrolytes was derived from: (1) studying the effects of molten sodium contact at 350°C on single crystal sodium beta alumina and polycrystalline sodium beta alumina; (2) determination of critical current density by monitoring acoustic emissions accompanying crack growth in sodium/sodium beta alumina/sodium cells subjected to linear current ramping at 1 mA cm−2 sec−1; (3) failure analysis conducted on cycled electrolytes, some from commercial sodium/sulfur cells, which had been subjected to up to 703 Ahr cm−2 of charge transfer. Gray coloration developing in beta aluminas in contact with molten sodium was found to be a consequence of formation, through reduction by sodium, of oxygen vacancies charge compensated by electrons. Electronic conductivity of the electrolyte increases as a result. No second phase formation was detected. Colored electrolytes from sodium/sulfur cells show evidence of a newly recognized degradation mechanism in which fracture occurs when sodium is reduced and deposited internally under pressure as metal in regions where an electronic conductivity gradient exists. Heating colored beta aluminas in air produces reoxidation and bleaching. Kinetics and other properties of the coloration and bleaching processes were determined. Critical current density was found to bear an inverse relation to average electrolyte grain size. Evidence was found in the cycled electrolytes for a slow crack growth mechanism and a progressive mode of degradation advancing from the sulfur electrode interface. Implications of the findings for the construction and operation of sodium/sulfur battery systems are discussed.

Factors Contributing To The Breakdown Of Sodium Beta Alumina Solid Electolytes

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Author : Andrew C. Buechele
language : en
Publisher:
Release Date : 1982

Factors Contributing To The Breakdown Of Sodium Beta Alumina Solid Electolytes written by Andrew C. Buechele and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Charge transfer categories.

Electrolytic Degradation Of Sodium Beta Alumina

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Author : Leslie Arthur Feldman
language : en
Publisher:
Release Date : 1982

Electrolytic Degradation Of Sodium Beta Alumina written by Leslie Arthur Feldman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Charge transfer categories.

Degradation Of Sodium Beta Alumina Electrolyte In Contact With Sulfur Sodium Polysulfide Melt

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Author : Meilin Liu
language : en
Publisher:
Release Date : 1986

Degradation Of Sodium Beta Alumina Electrolyte In Contact With Sulfur Sodium Polysulfide Melt written by Meilin Liu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.

Energy Research Abstracts

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Author :
language : en
Publisher:
Release Date : 1990

Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Power resources categories.

Substructure And Properties Of Sodium Beta Alumina Solid Electrolytes Interim Report

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Author : L. C. De Jonghe
language : en
Publisher:
Release Date : 1975

Substructure And Properties Of Sodium Beta Alumina Solid Electrolytes Interim Report written by L. C. De Jonghe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with categories.

Electrochemical Processes At The Sodium Beta 11 Alumina Interface

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Author : Catherine Colette Mailhé
language : en
Publisher:
Release Date : 1984

Electrochemical Processes At The Sodium Beta 11 Alumina Interface written by Catherine Colette Mailhé and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.

Substructure And Properties Of Sodium Beta Alumina Solid Electrolytes

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Author : Cornell University
language : en
Publisher:
Release Date : 1979

Substructure And Properties Of Sodium Beta Alumina Solid Electrolytes written by Cornell University and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Batteries (Ordnance) categories.

Some Geometrical Aspects Of Breakdown Of Sodium Beta Alumina

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Author :
language : en
Publisher:
Release Date : 1979

Some Geometrical Aspects Of Breakdown Of Sodium Beta Alumina written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.

The breakdown of single and polycrystalline sodium beta alumina was studied at 300 C and at room temperature. The breakdown in polycrystals involves a propagation of a highly-branched sodium-filled crack network. In single crystals the fracture surface could be studied directly. It was found that the crack network is filled with sodium from the crack faces rather than the crack tip.