Title :

Ag4V2O6F2 (SVOF): A High Silver Density Phase and Potential New Cathode Material for Implantable Cardioverter Defibrillators

Author(s) :

Sauvage, Frédéric [Auteur]
Northwestern University [Evanston]
Bodenez, Vincent [Auteur]
Laboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [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 UPJV [LRCS]
Poeppelmeier, Kenneth R. [Auteur]
Northwestern University [Evanston]

Journal title :

INORGANIC CHEMISTRY

Abbreviated title :

Inorg. Chem.

Volume number :

47

Pages :

8464-8472

Publisher :

American Chemical Society (ACS)

Publication date :

2008-09-29

ISSN :

1520-510X

English keyword(s) :

Physical and chemical processes
Redox reactions
Lithium
Electrodes
Silver

HAL domain(s) :

Chimie/Chimie théorique et/ou physique

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Autres travaux scientifiques

Submission date :

2021-06-18T08:52:03Z
2021-10-11T14:08:16Z