CobaltMaghrebV1, Maroc, Analysis, bibRecord, 000102

Physicochemical and electrocatalytic properties of Li-Co3O4 anodes prepared by chemical spray pyrolysis for application in alkaline water electrolysis

Identifieur interne : 000102 ( Maroc/Analysis ); précédent : 000101; suivant : 000103

Physicochemical and electrocatalytic properties of Li-Co3O4 anodes prepared by chemical spray pyrolysis for application in alkaline water electrolysis

Auteurs : M. Hamdani [Maroc] ; M. I. S. Pereira [Portugal] ; J. Douch [Maroc] ; A. Ait Addi [Maroc] ; Y. Berghoute [Maroc] ; M. H. Mendonca [Portugal]

Source :

Electrochimica acta [ 0013-4686 ] ; 2004.

RBID : Pascal:04-0148593

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Réaction électrochimique, Réaction catalytique, Evolution chimique, Oxygène, Electrocatalyse, Electrode couche mince, Cobalt oxyde, Matériau modifié, Echange ion, Lithium ion, Contrôle cinétique, Activité catalytique, Voltammétrie cyclique.
Wicri :
- topic : Oxygène.

English descriptors

KwdEn :
- Catalyst activity, Catalytic reaction, Chemical evolution, Cobalt oxide, Cyclic voltammetry, Electrocatalysis, Electrochemical reaction, Experimental study, Ion exchange, Kinetic control, Lithium ion, Modified material, Oxygen, Thin layer electrode.

Abstract

An electrode kinetic study of oxygen evolution has been made on Li-Co₃O₄ thin films in KOH aqueous solutions with different concentrations. Oxide films with different amounts of Li were prepared on glass, by chemical spray pyrolysis at 300 C, followed by a heat treatment at 400°C in air. The Li doping increases the electrical conductivity of these materials. In what concerns the roughness factor, an increase is also observed up to 3% of Li. From steady-state current-potential measurements, Tafel slopes close to 2.3RT/F were obtained in the low current range, irrespective to electrolyte concentration and Li percentage, pointing to the same oxygen evolution mechanism onto all prepared oxides. The reaction order with respect to OH- was found to be approximately 1.7. The electrodes performance towards the oxygen evolution increases with the increase in Li content.

Affiliations:

Maroc, Portugal

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

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Links to Exploration step

Pascal:04-0148593

Le document en format XML

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O<sub>4</sub>
 anodes prepared by chemical spray pyrolysis for application in alkaline water electrolysis</title>
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 anodes prepared by chemical spray pyrolysis for application in alkaline water electrolysis</title>
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<series><title level="j" type="main">Electrochimica acta</title>
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<term>Chemical evolution</term>
<term>Cobalt oxide</term>
<term>Cyclic voltammetry</term>
<term>Electrocatalysis</term>
<term>Electrochemical reaction</term>
<term>Experimental study</term>
<term>Ion exchange</term>
<term>Kinetic control</term>
<term>Lithium ion</term>
<term>Modified material</term>
<term>Oxygen</term>
<term>Thin layer electrode</term>
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<term>Réaction électrochimique</term>
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<term>Evolution chimique</term>
<term>Oxygène</term>
<term>Electrocatalyse</term>
<term>Electrode couche mince</term>
<term>Cobalt oxyde</term>
<term>Matériau modifié</term>
<term>Echange ion</term>
<term>Lithium ion</term>
<term>Contrôle cinétique</term>
<term>Activité catalytique</term>
<term>Voltammétrie cyclique</term>
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<front><div type="abstract" xml:lang="en">An electrode kinetic study of oxygen evolution has been made on Li-Co<sub>3</sub>
O<sub>4</sub>
 thin films in KOH aqueous solutions with different concentrations. Oxide films with different amounts of Li were prepared on glass, by chemical spray pyrolysis at 300 C, followed by a heat treatment at 400°C in air. The Li doping increases the electrical conductivity of these materials. In what concerns the roughness factor, an increase is also observed up to 3% of Li. From steady-state current-potential measurements, Tafel slopes close to 2.3RT/F were obtained in the low current range, irrespective to electrolyte concentration and Li percentage, pointing to the same oxygen evolution mechanism onto all prepared oxides. The reaction order with respect to OH- was found to be approximately 1.7. The electrodes performance towards the oxygen evolution increases with the increase in Li content.</div>
</front>
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<affiliations><list><country><li>Maroc</li>
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Physicochemical and electrocatalytic properties of Li-Co3O4 anodes prepared by chemical spray pyrolysis for application in alkaline water electrolysis

Physicochemical and electrocatalytic properties of Li-Co3O4 anodes prepared by chemical spray pyrolysis for application in alkaline water electrolysis

Source :

Descripteurs français

English descriptors

Abstract

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

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri