Ag4V2O6F2 (SVOF): A High Silver Density ...
Type de document :
Article dans une revue scientifique
DOI :
URL permanente :
Titre :
Ag4V2O6F2 (SVOF): A High Silver Density Phase and Potential New Cathode Material for Implantable Cardioverter Defibrillators
Auteur(s) :
Sauvage, Frédéric [Auteur]
Northwestern University [Evanston]
Bodenez, Vincent [Auteur]
Laboratoire réactivité et chimie des solides - UMR CNRS 7314 [LRCS]
Vezin, Herve [Auteur]
Laboratoire de Chimie Organique et Macromoleculaire [UMR CNRS 8009]
Albrecht, Thomas A. [Auteur]
Northwestern University [Evanston]
Tarascon, Jean-Marie [Auteur]
Laboratoire réactivité et chimie des solides - UMR CNRS 7314 [LRCS]
Poeppelmeier, Kenneth R. [Auteur]
Northwestern University [Evanston]
Northwestern University [Evanston]
Bodenez, Vincent [Auteur]
Laboratoire réactivité et chimie des solides - UMR CNRS 7314 [LRCS]
Vezin, Herve [Auteur]
Laboratoire de Chimie Organique et Macromoleculaire [UMR CNRS 8009]
Albrecht, Thomas A. [Auteur]
Northwestern University [Evanston]
Tarascon, Jean-Marie [Auteur]
Laboratoire réactivité et chimie des solides - UMR CNRS 7314 [LRCS]
Poeppelmeier, Kenneth R. [Auteur]
Northwestern University [Evanston]
Titre de la revue :
INORGANIC CHEMISTRY
Nom court de la revue :
Inorg. Chem.
Numéro :
47
Pagination :
8464-8472
Éditeur :
American Chemical Society (ACS)
Date de publication :
2008-09-29
ISSN :
1520-510X
Mot(s)-clé(s) en anglais :
Physical and chemical processes
Redox reactions
Lithium
Electrodes
Silver
Redox reactions
Lithium
Electrodes
Silver
Discipline(s) HAL :
Chimie/Chimie théorique et/ou physique
Résumé en anglais : [en]
The electrochemical reactivity of the cathode material Ag4V2O6F2 (SVOF) versus lithium, with a particular emphasis on the lithium insertion mechanism, was studied by means of the complementary techniques in situ X-ray ...
Lire la suite >The electrochemical reactivity of the cathode material Ag4V2O6F2 (SVOF) versus lithium, with a particular emphasis on the lithium insertion mechanism, was studied by means of the complementary techniques in situ X-ray diffraction, electron paramagnetic resonance, and high-resolution transmisssion electron microscopy. This study confirms the initial reports of a high capacity for SVOF of 148 mAh/g above 3 V and that the reduction of silver above 3 V (vs Li+/Li0) leads to a loss of SVOF crystallinity until it becomes completely amorphous between the third and fourth lithiums inserted. Next, vanadium is reduced between 2.5 and 1.5 V (vs Li+/Li0) for the fifth and sixth lithiums inserted. In addition, the polarization within the cathode is significantly lower for the vanadium reduction than for the silver reduction. The silver metal morphologies consisted of nanoparticles (∼5 nm diameter) and dendrites and were both seen in samples of lithiated SVOF.Lire moins >
Lire la suite >The electrochemical reactivity of the cathode material Ag4V2O6F2 (SVOF) versus lithium, with a particular emphasis on the lithium insertion mechanism, was studied by means of the complementary techniques in situ X-ray diffraction, electron paramagnetic resonance, and high-resolution transmisssion electron microscopy. This study confirms the initial reports of a high capacity for SVOF of 148 mAh/g above 3 V and that the reduction of silver above 3 V (vs Li+/Li0) leads to a loss of SVOF crystallinity until it becomes completely amorphous between the third and fourth lithiums inserted. Next, vanadium is reduced between 2.5 and 1.5 V (vs Li+/Li0) for the fifth and sixth lithiums inserted. In addition, the polarization within the cathode is significantly lower for the vanadium reduction than for the silver reduction. The silver metal morphologies consisted of nanoparticles (∼5 nm diameter) and dendrites and were both seen in samples of lithiated SVOF.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
CNRS
Collections :
Date de dépôt :
2021-06-18T08:52:03Z
2021-10-11T14:08:16Z
2021-10-11T14:08:16Z