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ChemInform Abstract: Determination of Oxygen Nonstoichiometry and Diffusivity in Mixed Conducting Oxides by Oxygen Coulometric Titration. Part 1. Chemical Diffusion in La0.8Sr0.2CoO3-δ.

✍ Scribed by M. H. R. LANKHORST; H. J. M. BOUWMEESTER

Publisher: John Wiley and Sons
Year: 2010
Weight: 32 KB
Volume: 28
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199732001

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✦ Synopsis

Determination of Oxygen Nonstoichiometry and Diffusivity in Mixed

Conducting Oxides by Oxygen Coulometric Titration.

Part 1. Chemical Diffusion in La0.8Sr0.2CoO3-δ.

-Title measurements are performed in the temp. range 700 -1000 • C. The chemical diffusion coefficient of La0.8Sr0.2CoO3-δ, D ( cm2/s) = 5.91 x exp ((-135 kJ/mol)/RT), determined from analysis of the transient current response to potentiostatic steps as a function of temp. and p(O2), is practically independent of p(O2) in the range 10-2 to 0.209 bar. -(LANKHORST, M.

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ChemInform Abstract: Determination of Oxygen Nonstoichiometry and Diffusivity in Mixed Conducting Oxides by Oxygen Coulometric Titration. Part 2. Oxygen Nonstoichiometry and Defect Model for La0.8Sr0.2CoO3-δ.

✍ M. H. R. LANKHORST; H. J. M. BOUWMEESTER 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 30 KB 👁 2 views

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