Solvent effect on synthesis of perovskite-type La1-xCaxCoO3 and their electrochemical properties for oxygen reactions
Identifieur interne : 000D59 ( Main/Merge ); précédent : 000D58; suivant : 000D60Solvent effect on synthesis of perovskite-type La1-xCaxCoO3 and their electrochemical properties for oxygen reactions
Auteurs : A. Kahoul [Algérie] ; A. Hammouche [Algérie] ; F. Naamoune [Algérie] ; P. Chartier [France] ; G. Poillerat [France] ; J. F. Koenig [France]Source :
- Materials research bulletin [ 0025-5408 ] ; 2000.
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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.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Solvent effect on synthesis of perovskite-type La<sub>1-x</sub>Ca<sub>x</sub>CoO<sub>3</sub> and their electrochemical properties for oxygen reactions</title><author><name sortKey="Kahoul, A" sort="Kahoul, A" uniqKey="Kahoul A" first="A." last="Kahoul">A. Kahoul</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire d'Energétique et d'Electrochimie des Solides, Institut de Chimie Industrielle, Université F.Abbas de Sétif</s1><s2>19000 Sétif</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>19000 Sétif</wicri:noRegion></affiliation></author><author><name sortKey="Hammouche, A" sort="Hammouche, A" uniqKey="Hammouche A" first="A." last="Hammouche">A. Hammouche</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire d'Energétique et d'Electrochimie des Solides, Institut de Chimie Industrielle, Université F.Abbas de Sétif</s1><s2>19000 Sétif</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>19000 Sétif</wicri:noRegion></affiliation></author><author><name sortKey="Naamoune, F" sort="Naamoune, F" uniqKey="Naamoune F" first="F." last="Naamoune">F. Naamoune</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire d'Energétique et d'Electrochimie des Solides, Institut de Chimie Industrielle, Université F.Abbas de Sétif</s1><s2>19000 Sétif</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>19000 Sétif</wicri:noRegion></affiliation></author><author><name sortKey="Chartier, P" sort="Chartier, P" uniqKey="Chartier P" first="P." last="Chartier">P. Chartier</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide, UMR ULP/CNRS 7512, Université Louis Pasteur, 4 rue Blaise Pascal</s1><s2>67000, Strasbourg</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Grand Est</region><region type="old region">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName><orgName type="university">Université Strasbourg 1</orgName></affiliation></author><author><name sortKey="Poillerat, G" sort="Poillerat, G" uniqKey="Poillerat G" first="G." last="Poillerat">G. 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Kahoul</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire d'Energétique et d'Electrochimie des Solides, Institut de Chimie Industrielle, Université F.Abbas de Sétif</s1><s2>19000 Sétif</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>19000 Sétif</wicri:noRegion></affiliation></author><author><name sortKey="Hammouche, A" sort="Hammouche, A" uniqKey="Hammouche A" first="A." last="Hammouche">A. Hammouche</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire d'Energétique et d'Electrochimie des Solides, Institut de Chimie Industrielle, Université F.Abbas de Sétif</s1><s2>19000 Sétif</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>19000 Sétif</wicri:noRegion></affiliation></author><author><name sortKey="Naamoune, F" sort="Naamoune, F" uniqKey="Naamoune F" first="F." last="Naamoune">F. Naamoune</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire d'Energétique et d'Electrochimie des Solides, Institut de Chimie Industrielle, Université F.Abbas de Sétif</s1><s2>19000 Sétif</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>19000 Sétif</wicri:noRegion></affiliation></author><author><name sortKey="Chartier, P" sort="Chartier, P" uniqKey="Chartier P" first="P." last="Chartier">P. Chartier</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide, UMR ULP/CNRS 7512, Université Louis Pasteur, 4 rue Blaise Pascal</s1><s2>67000, Strasbourg</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Grand Est</region><region type="old region">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName><orgName type="university">Université Strasbourg 1</orgName></affiliation></author><author><name sortKey="Poillerat, G" sort="Poillerat, G" uniqKey="Poillerat G" first="G." last="Poillerat">G. Poillerat</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide, UMR ULP/CNRS 7512, Université Louis Pasteur, 4 rue Blaise Pascal</s1><s2>67000, Strasbourg</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Grand Est</region><region type="old region">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName><orgName type="university">Université Strasbourg 1</orgName></affiliation></author><author><name sortKey="Koenig, J F" sort="Koenig, J F" uniqKey="Koenig J" first="J. F." last="Koenig">J. F. Koenig</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide, UMR ULP/CNRS 7512, Université Louis Pasteur, 4 rue Blaise Pascal</s1><s2>67000, Strasbourg</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Grand Est</region><region type="old region">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName><orgName type="university">Université Strasbourg 1</orgName></affiliation></author></analytic><series><title level="j" type="main">Materials research bulletin</title><title level="j" type="abbreviated">Mater. res. bull.</title><idno type="ISSN">0025-5408</idno><imprint><date when="2000">2000</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Materials research bulletin</title><title level="j" type="abbreviated">Mater. res. bull.</title><idno type="ISSN">0025-5408</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Calcium Oxides</term><term>Citrate</term><term>Cobalt Oxides</term><term>Electrocatalysis</term><term>Electrochemical properties</term><term>Lanthanum Oxides</term><term>Perovskite type compound</term><term>Physicochemical properties</term><term>Quaternary compound</term><term>Sol gel process</term><term>Solvent effect</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Effet solvant</term><term>Perovskites</term><term>Propriété physicochimique</term><term>Procédé sol gel</term><term>Lanthane Oxyde</term><term>Calcium Oxyde</term><term>Cobalt Oxyde</term><term>Composé quaternaire</term><term>Propriété électrochimique</term><term>Citrate</term><term>Electrocatalyse</term><term>La1-xCaxCoO3</term><term>Ca Co La O</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The object of the present investigation is to compare some physico-chemical properties of two La<sub>1-x</sub>Ca<sub>x</sub>CoO<sub>3</sub> 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.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Alsace (région administrative)</li><li>Grand Est</li></region><settlement><li>Strasbourg</li></settlement><orgName><li>Université Strasbourg 1</li></orgName></list><tree><country name="Algérie"><noRegion><name sortKey="Kahoul, A" sort="Kahoul, A" uniqKey="Kahoul A" first="A." last="Kahoul">A. Kahoul</name></noRegion><name sortKey="Hammouche, A" sort="Hammouche, A" uniqKey="Hammouche A" first="A." last="Hammouche">A. Hammouche</name><name sortKey="Naamoune, F" sort="Naamoune, F" uniqKey="Naamoune F" first="F." last="Naamoune">F. Naamoune</name></country><country name="France"><region name="Grand Est"><name sortKey="Chartier, P" sort="Chartier, P" uniqKey="Chartier P" first="P." last="Chartier">P. Chartier</name></region><name sortKey="Koenig, J F" sort="Koenig, J F" uniqKey="Koenig J" first="J. F." last="Koenig">J. F. Koenig</name><name sortKey="Poillerat, G" sort="Poillerat, G" uniqKey="Poillerat G" first="G." last="Poillerat">G. Poillerat</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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