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Determination of oxidation state of electrolyzed La2CuOy by flow-coulometry

✍ Scribed by Yuji Sasaki

Book ID
104115063
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
541 KB
Volume
42
Category
Article
ISSN
0013-4686

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✦ Synopsis

The oxidation state of the superconducting oxide, LalCuOj, oxidized by electrolysis, which shows higher superconduction, was determined by a wet-chemical procedure based on flow-coulometry.

The ratio of CUO+/CU,,,,~~ in the bulk sample (xb) after electrolysis depends strongly on the potential and the electrolysis time, and the reducibility of xb in the sample after re-electrolysis was observed. The electrolytic reactions of LazCuO,-with the solution were estimated as CuO+ + 2H+ + em F? Cu2+ + Hz0 in acid and CuO+ + H20 + e-3 Cu2+ + 20H-in alkali solution, accompanied with hydrogen or oxygen evolution. The superconductivities in these samples were measured, and it was confirmed that the superconducting property in LazCuO, increases with xb.

πŸ“œ SIMILAR VOLUMES

ChemInform Abstract: Determination of Ox
ChemInform Abstract: Determination of Oxidation State of Electrolyzed La2CuOy by Flow- Coulometry.
✍ Y. SASAKI πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 27 KB

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