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Room Temperature Electrochemical Redox Reactions of the Defect Perovskite SrFeO

Chemistry of Materials, ISSN: 0897-4756, Vol: 10, Issue: 9, Page: 2403-2411
1998
  • 91
    Citations
  • 0
    Usage
  • 67
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    91
    • Citation Indexes
      91
  • Captures
    67

Article Description

The electrochemical and chemical oxidation of the defect perovskite SrFeO to the cubic perovskite SrFeO at ambient temperature in alkaline electrolyte are shown to be in principle reversible processes with the appearance of intermediate compounds; the oxidation can be described by the formation of line phases SrFeO and SrFeO and one solid solution range SrFeO with 0 ≤ x ≤ 0.03. The structure of the brownmillerite type parent phase is characterized by the presence of stacking faults in the octahedral and tetrahedral sequence of layers whose concentration increases significantly upon formation of the intermediate phases. Models based on observed microscopic features are discussed in order to explain the unusual phenomenon of room temperature oxygen transport.

Bibliographic Details

A. Nemudry; I. Gainutdinov; V. Boldyrev; M. Weiss; R. Schöllhorn

American Chemical Society (ACS)

Chemistry; Chemical Engineering; Materials Science

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