CobaltMaghrebV1, France, Analysis, bibRecord, 000296

Solvent effect on synthesis of perovskite-type La1−xCaxCoO3 and their electrochemical properties for oxygen reactions

Identifieur interne : 000296 ( France/Analysis ); précédent : 000295; suivant : 000297

Solvent effect on synthesis of perovskite-type La1−xCaxCoO3 and their electrochemical properties for oxygen reactions

Auteurs : A. Kahoul [Algérie] ; A. Hammouche [Algérie] ; F. Nâamoune [Algérie] ; P. Chartier [France] ; G. Poillerat [France] ; J. F. Koenig [France]

Source :

Materials Research Bulletin [ 0025-5408 ] ; 2000.

RBID : ISTEX:B7709DA64E311E937F5C8FB296224C69A37CA869

Descripteurs français

Pascal (Inist)
- Ca Co La O, Calcium Oxyde, Citrate, Cobalt Oxyde, Composé quaternaire, Effet solvant, Electrocatalyse, La1-xCaxCoO3, Lanthane Oxyde, Perovskites, Procédé sol gel, Propriété physicochimique, Propriété électrochimique.

English descriptors

KwdEn :
- A. Oxides, B. Sol-gel chemistry, Calcium Oxides, Citrate, Cobalt Oxides, D. Electrochemical properties, Electrocatalysis, Electrochemical properties, Lanthanum Oxides, Perovskite type compound, Physicochemical properties, Quaternary compound, Sol gel process, Solvent effect.

Abstract

The object of the present investigation is to compare some physico-chemical properties of two La1−xCaxCoO3 series (0.0 ≤ x ≤ 0.6), prepared by the sol-gel route using either water or propanol as solvents. The synthesized oxide powders were characterized by X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), BET, and electrical conductivity measurements. The morphology of the powders was examined using scanning electron microscopy (SEM). The results revealed that the use of propanol led systematically to the formation of homogeneous oxides with a single perovskite-structure phase, larger surface area, and higher conductivity values compared with those prepared using water. Such features, which seem to be directly related to the properties of the solvent of the starting solution, are undoubtedly favorable for a higher electrocatalytic activity of these oxides in oxygen electrode reactions.

Url:

https://api.istex.fr/document/B7709DA64E311E937F5C8FB296224C69A37CA869/fulltext/pdf

DOI: 10.1016/S0025-5408(00)00395-0

Affiliations:

Links to Exploration step

ISTEX:B7709DA64E311E937F5C8FB296224C69A37CA869

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Solvent effect on synthesis of perovskite-type La1−xCaxCoO3 and their electrochemical properties for oxygen reactions

Solvent effect on synthesis of perovskite-type La1−xCaxCoO3 and their electrochemical properties for oxygen reactions

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

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