AustralieFrV1, Main, Exploration, bibRecordById, Pascal:08-0324874

Synthesis and electrochemical performance of doped LiCoO2materials

Identifieur interne : 009326 ( Main/Exploration ); précédent : 009325; suivant : 009327

Synthesis and electrochemical performance of doped LiCoO2materials

Auteurs : S. A. Needham [Australie] ; G. X. Wang [Australie] ; H. K. Liu [Australie] ; V. A. Drozd [Taïwan] ; R. S. Liu [Taïwan]

Source :

Journal of power sources [ 0378-7753 ] ; 2007.

RBID : Pascal:08-0324874

Descripteurs français

Pascal (Inist)
- Performance, Composé insertion, Caractérisation, Lithium Cobalt Oxyde, Diffractométrie RX, Dopage, Cycle charge décharge, Batterie lithium, Cathode, Accumulateur électrochimique.
Wicri :
- topic : Dopage.

English descriptors

KwdEn :
- Cathode, Characterization, Discharge charge cycle, Doping, Intercalation compound, Lithium Cobalt Oxides, Lithium battery, Performance, Secondary cell, X ray diffractometry.

Abstract

Layered intercalation compounds LiM_0.02Co_0.98O₂ (M = Mo⁶⁺, V⁵⁺, Zr⁴⁺) have been prepared using a simple solid-state method. Morphological and structural characterization of the synthesized powders is reported along with their electrochemical performance when used as the active material in a lithium half-cell. Synchrotron X-ray diffraction patterns suggest a single phase HT-LiCoO₂ that is isostructural to α-NaFeO₂ cannot be formed by aliovalent doping with Mo, V, and Zr. Scanning electron images show that particles are well-crystallized with a size distribution in the range of 1-5 μm. Charge-discharge cycling of the cells indicated first cycle irreversible capacity loss in order of increasing magnitude was Zr (15 mAh g^-1), Mo (22 mAh g^-1), and V (45 mAh g^-1). Prolonged cycling the Mo-doped cell produced the best performance of all dopants with a stable reversible capacity of 120 mAh g^-1 after 30 cycles, but was inferior to that of pure LiCoO₂.

Affiliations:

Australie, Taïwan

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Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cathode</term>
<term>Characterization</term>
<term>Discharge charge cycle</term>
<term>Doping</term>
<term>Intercalation compound</term>
<term>Lithium Cobalt Oxides</term>
<term>Lithium battery</term>
<term>Performance</term>
<term>Secondary cell</term>
<term>X ray diffractometry</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Performance</term>
<term>Composé insertion</term>
<term>Caractérisation</term>
<term>Lithium Cobalt Oxyde</term>
<term>Diffractométrie RX</term>
<term>Dopage</term>
<term>Cycle charge décharge</term>
<term>Batterie lithium</term>
<term>Cathode</term>
<term>Accumulateur électrochimique</term>
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<front><div type="abstract" xml:lang="en">Layered intercalation compounds LiM<sub>0.02</sub>
Co<sub>0.98</sub>
O<sub>2</sub>
 (M = Mo<sup>6+</sup>
, V<sup>5+</sup>
, Zr<sup>4+</sup>
) have been prepared using a simple solid-state method. Morphological and structural characterization of the synthesized powders is reported along with their electrochemical performance when used as the active material in a lithium half-cell. Synchrotron X-ray diffraction patterns suggest a single phase HT-LiCoO<sub>2</sub>
 that is isostructural to α-NaFeO<sub>2</sub>
 cannot be formed by aliovalent doping with Mo, V, and Zr. Scanning electron images show that particles are well-crystallized with a size distribution in the range of 1-5 μm. Charge-discharge cycling of the cells indicated first cycle irreversible capacity loss in order of increasing magnitude was Zr (15 mAh g<sup>-1</sup>
), Mo (22 mAh g<sup>-1</sup>
), and V (45 mAh g<sup>-1</sup>
). Prolonged cycling the Mo-doped cell produced the best performance of all dopants with a stable reversible capacity of 120 mAh g<sup>-1</sup>
 after 30 cycles, but was inferior to that of pure LiCoO<sub>2</sub>
.</div>
</front>
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<tree><country name="Australie"><noRegion><name sortKey="Needham, S A" sort="Needham, S A" uniqKey="Needham S" first="S. A." last="Needham">S. A. Needham</name>
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<name sortKey="Liu, H K" sort="Liu, H K" uniqKey="Liu H" first="H. K." last="Liu">H. K. Liu</name>
<name sortKey="Liu, H K" sort="Liu, H K" uniqKey="Liu H" first="H. K." last="Liu">H. K. Liu</name>
<name sortKey="Wang, G X" sort="Wang, G X" uniqKey="Wang G" first="G. X." last="Wang">G. X. Wang</name>
<name sortKey="Wang, G X" sort="Wang, G X" uniqKey="Wang G" first="G. X." last="Wang">G. X. Wang</name>
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<country name="Taïwan"><noRegion><name sortKey="Drozd, V A" sort="Drozd, V A" uniqKey="Drozd V" first="V. A." last="Drozd">V. A. Drozd</name>
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Synthesis and electrochemical performance of doped LiCoO2materials

Synthesis and electrochemical performance of doped LiCoO2materials

Source :

Descripteurs français

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri