ELECTROCHEMICAL PROPERTIES OF THE MIXED-OXIDE FE0.11V2O5.16 AS A LI INTERCALATION COMPOUND

Authors
FARCY J MAINGOT S SOUDAN P PEREIRARAMOS JP BAFFIER N
Citation
J. Farcy et al., ELECTROCHEMICAL PROPERTIES OF THE MIXED-OXIDE FE0.11V2O5.16 AS A LI INTERCALATION COMPOUND, Solid state ionics, 99(1-2), 1997, pp. 61-69
Citations number
19
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
99
Issue
1-2
Year of publication
1997
Pages
61 - 69
Database
ISI
SICI code
0167-2738(1997)99:1-2<61:EPOTMF>2.0.ZU;2-I
Abstract
The electrochemical properties of a new mixed oxide Fe0.11V2O5.16 as a Li intercalation compound are investigated in relation with structura l characteristics. The x variation of the chemical diffusion coefficie nt for lithium ions is determined from a.c. impedance spectroscopy mea surements on a wide composition range 0<x<1.8. <(D)over tilde (Li)> is found to be strongly dependent on x in LixFe0.11V2O5.16. These result s are completed by XRD investigation performed on reduced electrodes. Ferric ions located in octahedral sites of V2O5 stabs act as stabilizi ng agents of the host lattice in that emergence of lithiated phases re lated to epsilon and gamma structure is delayed towards deeper depths of discharge than in the case of LixV2O5.