Structure and electrochemical hydrogen storage properties of Ti2Ni alloy synthesized by ball milling
Identifieur interne : 000031 ( France/Analysis ); précédent : 000030; suivant : 000032Structure and electrochemical hydrogen storage properties of Ti2Ni alloy synthesized by ball milling
Auteurs : B. Hosni [Tunisie] ; X. Li [France] ; C. Khaldi [Tunisie] ; O. Elkedim [France] ; Jilani Lamloumi [Tunisie]Source :
- Journal of alloys and compounds [ 0925-8388 ] ; 2014.
Descripteurs français
- Pascal (Inist)
- Propriété électrochimique, Stockage hydrogène, Broyeur boulet, Batterie, Diffraction RX, Microscopie électronique balayage, Microscopie électronique transmission, Méthode potentiodynamique, Corrosion, Effet température, Alliage amorphe, Anode, Hydrure, Nickel alliage, Titane alliage, Métal transition alliage.
- Wicri :
- topic : Corrosion.
English descriptors
- KwdEn :
Abstract
The structure and the electrochemical hydrogen storage properties of amorphous Ti2Ni alloy synthesized by ball milling and used as an anode in nickel-metal hydride batteries were studied. Nominal Ti2Ni was synthesized under argon atmosphere at room temperature using a planetary high-energy ball mill. The structural and morphological characterization of the amorphous Ti2Ni alloy is carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The electrochemical characterization of the Ti2Ni electrodes is carried out by the galvanostatic charging and discharging, the constant potential discharge, the open circuit potential and the potentiodynamic polarization techniques. The Ti2Ni alloy activation requires only one cycle of charge and discharge, regardless of the temperature. The electrochemical discharge capacity of the Ti2Ni alloy, during the first eight cycles, and at a temperature of 30 °C, remained practically unchanged and a good held cycling is observed. By increasing the temperature, the electrochemical discharge capacity loss after eight cycles undergoes an increase and it is more pronounced for the temperature 60 °C. At 30 °C, the anodic corrosion current density is 1 mA cm-2 and then it undergoes a rapid drop, remaining substantially constant (0.06 mA cm-2) in the range 40-60 °C, before undergoing a slight increase to 70 °C (0.3 mA cm-2). This variation is in good agreement with the maximum electrochemical discharge capacity values found for the different temperatures. By increasing the temperature, the difference between the OCP curves corresponding to C/10 and C/30 regimes undergoes significant growth, reaching a maximum value (ΔEOCV = 10.3 mV) at 60 °C before undergoing a decrease at 70 °C. A good correlation is found between the evolutions of the corrosion current density with the maximum discharge capacity on one hand and on the other hand with the ΔEOCV, according to the temperature. The effect of temperature on the different electrochemical parameters (Icorr, Cmax, ΔEOCV) and the various correlations found between them allows us to optimize the performance of the battery and provide proper operation under the good experimental conditions.
Affiliations:
- France, Tunisie
- Bourgogne-Franche-Comté, Franche-Comté, Gouvernorat de Tunis
- Belfort, Tunis
- Université de Tunis, Université de technologie de Belfort-Montbéliard
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Pascal:15-0006254Le document en format XML
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Hosni</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Equipe des Hydrures Metalliques, Laboratoire de Mécanique, Matériaux et Procédés, Ecole Nationale Supérieure d'Ingénieurs de Tunis (ENSIT (Ex ESSTT)), Université de Tunis, 5 Avenue Taha Hussein</s1><s2>1008 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName><orgName type="university">Université de Tunis</orgName><placeName><settlement type="city">Tunis</settlement><region type="region" nuts="2">Gouvernorat de Tunis</region></placeName></affiliation></author><author><name sortKey="Li, X" sort="Li, X" uniqKey="Li X" first="X." last="Li">X. 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Hosni</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Equipe des Hydrures Metalliques, Laboratoire de Mécanique, Matériaux et Procédés, Ecole Nationale Supérieure d'Ingénieurs de Tunis (ENSIT (Ex ESSTT)), Université de Tunis, 5 Avenue Taha Hussein</s1><s2>1008 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName><orgName type="university">Université de Tunis</orgName><placeName><settlement type="city">Tunis</settlement><region type="region" nuts="2">Gouvernorat de Tunis</region></placeName></affiliation></author><author><name sortKey="Li, X" sort="Li, X" uniqKey="Li X" first="X." last="Li">X. Li</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>FEMTO-ST, MN2S, Université de Technologie de Belfort-Montbéliard, Site de Sévenans</s1><s2>90010 Belfort</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Bourgogne-Franche-Comté</region><region type="old region" nuts="2">Franche-Comté</region><settlement type="city">Belfort</settlement></placeName><orgName type="university">Université de technologie de Belfort-Montbéliard</orgName></affiliation></author><author><name sortKey="Khaldi, C" sort="Khaldi, C" uniqKey="Khaldi C" first="C." last="Khaldi">C. Khaldi</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Equipe des Hydrures Metalliques, Laboratoire de Mécanique, Matériaux et Procédés, Ecole Nationale Supérieure d'Ingénieurs de Tunis (ENSIT (Ex ESSTT)), Université de Tunis, 5 Avenue Taha Hussein</s1><s2>1008 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName><orgName type="university">Université de Tunis</orgName><placeName><settlement type="city">Tunis</settlement><region type="region" nuts="2">Gouvernorat de Tunis</region></placeName></affiliation></author><author><name sortKey="Elkedim, O" sort="Elkedim, O" uniqKey="Elkedim O" first="O." last="Elkedim">O. Elkedim</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>FEMTO-ST, MN2S, Université de Technologie de Belfort-Montbéliard, Site de Sévenans</s1><s2>90010 Belfort</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Bourgogne-Franche-Comté</region><region type="old region" nuts="2">Franche-Comté</region><settlement type="city">Belfort</settlement></placeName><orgName type="university">Université de technologie de Belfort-Montbéliard</orgName></affiliation></author><author><name sortKey="Lamloumi, J" sort="Lamloumi, J" uniqKey="Lamloumi J" first="J." last="Lamloumi">Jilani Lamloumi</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Equipe des Hydrures Metalliques, Laboratoire de Mécanique, Matériaux et Procédés, Ecole Nationale Supérieure d'Ingénieurs de Tunis (ENSIT (Ex ESSTT)), Université de Tunis, 5 Avenue Taha Hussein</s1><s2>1008 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName><orgName type="university">Université de Tunis</orgName><placeName><settlement type="city">Tunis</settlement><region type="region" nuts="2">Gouvernorat de Tunis</region></placeName><placeName><settlement type="city">Tunis</settlement><region type="region" nuts="2">Gouvernorat de Tunis</region></placeName><orgName type="university" n="3">Université de Tunis</orgName></affiliation></author></analytic><series><title level="j" type="main">Journal of alloys and compounds</title><title level="j" type="abbreviated">J. alloys compd.</title><idno type="ISSN">0925-8388</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of alloys and compounds</title><title level="j" type="abbreviated">J. alloys compd.</title><idno type="ISSN">0925-8388</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amorphous alloy</term><term>Anode</term><term>Ball mill</term><term>Battery</term><term>Corrosion</term><term>Electrochemical properties</term><term>Hydrides</term><term>Hydrogen storage</term><term>Nickel alloy</term><term>Potentiodynamic method</term><term>Scanning electron microscopy</term><term>Temperature effect</term><term>Titanium alloy</term><term>Transition metal alloy</term><term>Transmission electron microscopy</term><term>X ray diffraction</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Propriété électrochimique</term><term>Stockage hydrogène</term><term>Broyeur boulet</term><term>Batterie</term><term>Diffraction RX</term><term>Microscopie électronique balayage</term><term>Microscopie électronique transmission</term><term>Méthode potentiodynamique</term><term>Corrosion</term><term>Effet température</term><term>Alliage amorphe</term><term>Anode</term><term>Hydrure</term><term>Nickel alliage</term><term>Titane alliage</term><term>Métal transition alliage</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Corrosion</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The structure and the electrochemical hydrogen storage properties of amorphous Ti<sub>2</sub>Ni alloy synthesized by ball milling and used as an anode in nickel-metal hydride batteries were studied. Nominal Ti<sub>2</sub>Ni was synthesized under argon atmosphere at room temperature using a planetary high-energy ball mill. The structural and morphological characterization of the amorphous Ti<sub>2</sub>Ni alloy is carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The electrochemical characterization of the Ti<sub>2</sub>Ni electrodes is carried out by the galvanostatic charging and discharging, the constant potential discharge, the open circuit potential and the potentiodynamic polarization techniques. The Ti<sub>2</sub>Ni alloy activation requires only one cycle of charge and discharge, regardless of the temperature. The electrochemical discharge capacity of the Ti<sub>2</sub>Ni alloy, during the first eight cycles, and at a temperature of 30 °C, remained practically unchanged and a good held cycling is observed. By increasing the temperature, the electrochemical discharge capacity loss after eight cycles undergoes an increase and it is more pronounced for the temperature 60 °C. At 30 °C, the anodic corrosion current density is 1 mA cm<sup>-2</sup> and then it undergoes a rapid drop, remaining substantially constant (0.06 mA cm<sup>-2</sup>) in the range 40-60 °C, before undergoing a slight increase to 70 °C (0.3 mA cm<sup>-2</sup>). This variation is in good agreement with the maximum electrochemical discharge capacity values found for the different temperatures. By increasing the temperature, the difference between the OCP curves corresponding to C/10 and C/30 regimes undergoes significant growth, reaching a maximum value (ΔE<sub>OCV</sub> = 10.3 mV) at 60 °C before undergoing a decrease at 70 °C. A good correlation is found between the evolutions of the corrosion current density with the maximum discharge capacity on one hand and on the other hand with the ΔE<sub>OCV</sub>, according to the temperature. The effect of temperature on the different electrochemical parameters (I<sub>corr</sub>, C<sub>max</sub>, ΔE<sub>OCV</sub>) and the various correlations found between them allows us to optimize the performance of the battery and provide proper operation under the good experimental conditions.</div></front></TEI><affiliations><list><country><li>France</li><li>Tunisie</li></country><region><li>Bourgogne-Franche-Comté</li><li>Franche-Comté</li><li>Gouvernorat de Tunis</li></region><settlement><li>Belfort</li><li>Tunis</li></settlement><orgName><li>Université de Tunis</li><li>Université de technologie de Belfort-Montbéliard</li></orgName></list><tree><country name="Tunisie"><region name="Gouvernorat de Tunis"><name sortKey="Hosni, B" sort="Hosni, B" uniqKey="Hosni B" first="B." last="Hosni">B. Hosni</name></region><name sortKey="Khaldi, C" sort="Khaldi, C" uniqKey="Khaldi C" first="C." last="Khaldi">C. Khaldi</name><name sortKey="Lamloumi, J" sort="Lamloumi, J" uniqKey="Lamloumi J" first="J." last="Lamloumi">Jilani Lamloumi</name></country><country name="France"><region name="Bourgogne-Franche-Comté"><name sortKey="Li, X" sort="Li, X" uniqKey="Li X" first="X." last="Li">X. Li</name></region><name sortKey="Elkedim, O" sort="Elkedim, O" uniqKey="Elkedim O" first="O." last="Elkedim">O. Elkedim</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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