publication . Other literature type . Article . Preprint . 2013

Reversible redox reactions in an epitaxially stabilized SrCoOx oxygen sponge

Jeen, Hyoungjeen; Choi, Woo Seok; Biegalski, Michael D.; Folkman, Chad M.; Tung, I-Cheng; Fong, Dillon D.; Freeland, John W.; Shin, Dongwon; Ohta, Hiromichi; Chisholm, Matthew F.; ...
  • Published: 25 Aug 2013
  • Publisher: Springer Science and Business Media LLC
Abstract
Fast, reversible redox reactions in solids at low temperatures without thermomechanical degradation are a promising strategy for enhancing the overall performance and lifetime of many energy materials and devices. However, the robust nature of the cation's oxidation state and the high thermodynamic barrier have hindered the realization of fast catalysis and bulk diffusion at low temperatures. Here, we report a significant lowering of the redox temperature by epitaxial stabilization of strontium cobaltites (SrCoOx) grown directly as one of two distinct crystalline phases, either the perovskite SrCoO3-{\delta} or the brownmillerite SrCoO2.5. Importantly, these two...
Subjects
free text keywords: Mechanical Engineering, General Materials Science, Mechanics of Materials, General Chemistry, Condensed Matter Physics, Oxygen, chemistry.chemical_element, chemistry, Redox, Perovskite, chemistry.chemical_compound, Sponge, biology.organism_classification, biology, Redox Activity, Degradation (geology), Thin film, Materials science, Epitaxy, Photochemistry, Condensed Matter - Materials Science
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