Investigation of the mechanism of electrosynthesis of the superconductor Ba1-xKxBiO3

Gerald L. Roberts; Susan M. Kauzlarich; Robert S. Glass; John C. Estill

Investigation of the mechanism of electrosynthesis of the superconductor Ba_1-xK_xBiO₃

Gerald L. Roberts, Susan M. Kauzlarich, Robert S. Glass, John C. Estill

Chemistry

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8 Scopus citations

Abstract

Cyclic voltammetry has been used to investigate the electrodeposition of the superconducting material, Ba_1-xK_xBiO₃. Reactions occurring at a Pt substrate electrode over a wide potential range have been assigned. Evidence has been found for time-dependent (cycle number) electrochemical behavior. High-quality superconducting crystals can be obtained only when the potential of the electrode is held in the region of predominantly kinetic control. The Bi^III to Bi^V oxidation appears as two peaks during the anodic scan. Reproducible cyclic voltammograms were obtained only after the KOH flux containing Ba(OH)₂ and Bi₂O₃ was equilibrated for 24 h under a water-saturated argon atmosphere. High-quality superconductive crystals are obtained only when the deposition potential is on the rising portion of the Bi^III to Bi^IV oxidation peak.

Original language	English (US)
Pages (from-to)	1645-1650
Number of pages	6
Journal	Chemistry of Materials
Volume	5
Issue number	11
State	Published - 1993

ASJC Scopus subject areas

Materials Chemistry
Materials Science(all)

Cite this

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title = "Investigation of the mechanism of electrosynthesis of the superconductor Ba1-xKxBiO3 ",

abstract = "Cyclic voltammetry has been used to investigate the electrodeposition of the superconducting material, Ba1-xKxBiO3. Reactions occurring at a Pt substrate electrode over a wide potential range have been assigned. Evidence has been found for time-dependent (cycle number) electrochemical behavior. High-quality superconducting crystals can be obtained only when the potential of the electrode is held in the region of predominantly kinetic control. The BiIII to BiV oxidation appears as two peaks during the anodic scan. Reproducible cyclic voltammograms were obtained only after the KOH flux containing Ba(OH)2 and Bi2O3 was equilibrated for 24 h under a water-saturated argon atmosphere. High-quality superconductive crystals are obtained only when the deposition potential is on the rising portion of the BiIII to BiIV oxidation peak.",

author = "Roberts, {Gerald L.} and Kauzlarich, {Susan M.} and Glass, {Robert S.} and Estill, {John C.}",

year = "1993",

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journal = "Chemistry of Materials",

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T1 - Investigation of the mechanism of electrosynthesis of the superconductor Ba1-xKxBiO3

AU - Roberts, Gerald L.

AU - Kauzlarich, Susan M.

AU - Glass, Robert S.

AU - Estill, John C.

PY - 1993

Y1 - 1993

N2 - Cyclic voltammetry has been used to investigate the electrodeposition of the superconducting material, Ba1-xKxBiO3. Reactions occurring at a Pt substrate electrode over a wide potential range have been assigned. Evidence has been found for time-dependent (cycle number) electrochemical behavior. High-quality superconducting crystals can be obtained only when the potential of the electrode is held in the region of predominantly kinetic control. The BiIII to BiV oxidation appears as two peaks during the anodic scan. Reproducible cyclic voltammograms were obtained only after the KOH flux containing Ba(OH)2 and Bi2O3 was equilibrated for 24 h under a water-saturated argon atmosphere. High-quality superconductive crystals are obtained only when the deposition potential is on the rising portion of the BiIII to BiIV oxidation peak.

AB - Cyclic voltammetry has been used to investigate the electrodeposition of the superconducting material, Ba1-xKxBiO3. Reactions occurring at a Pt substrate electrode over a wide potential range have been assigned. Evidence has been found for time-dependent (cycle number) electrochemical behavior. High-quality superconducting crystals can be obtained only when the potential of the electrode is held in the region of predominantly kinetic control. The BiIII to BiV oxidation appears as two peaks during the anodic scan. Reproducible cyclic voltammograms were obtained only after the KOH flux containing Ba(OH)2 and Bi2O3 was equilibrated for 24 h under a water-saturated argon atmosphere. High-quality superconductive crystals are obtained only when the deposition potential is on the rising portion of the BiIII to BiIV oxidation peak.

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Investigation of the mechanism of electrosynthesis of the superconductor Ba_1-xK_xBiO₃

Abstract

ASJC Scopus subject areas

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