Electrochemical studies of Li-ion extraction and insertion of LiMn2O4 single crystal

Citation
K. Dokko et al., Electrochemical studies of Li-ion extraction and insertion of LiMn2O4 single crystal, EL SOLID ST, 4(9), 2001, pp. A151-A153
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHEMICAL AND SOLID STATE LETTERS
ISSN journal
1099-0062 → ACNP
Volume
4
Issue
9
Year of publication
2001
Pages
A151 - A153
Database
ISI
SICI code
1099-0062(200109)4:9<A151:ESOLEA>2.0.ZU;2-R
Abstract
A single crystal of LiMn2O4 (similar to 35 X 20 X 12 mum) was prepared by a flux method. The electrochemical properties of this material were investig ated in a 1 M LiClO4/propylene carbonate + ethylene carbonate solution usin g a microelectrode technique. A Pt microfilament was brought into contact w ith the single crystal, and cyclic voltammetry and potential step chronoamp erometry measurements were successfully performed on this electrode. The si ngle crystal of LiMn2O4 exhibited reversible behavior during the Li-ion ext raction/insertion. A new peak was observed at 3.86 V vs. Li/Li+ which was n ot clearly reported so far on polycrystalline of LiMn2O4. The chemical diff usion coefficient of Li-ion into the LiMn2O4 crystal was estimated to be 10 (-11) cm(2)/s. (C) 2001 The Electrochemical Society.