In situ Raman spectroscopy of single microparticle Li+-intercalation electrodes

被引：50

作者：

Dokko, K ^{[1
]}

Shi, QF ^{[1
]}

Stefan, IC ^{[1
]}

Scherson, DA ^{[1
]}

机构：

[1] Case Western Reserve Univ, Dept Chem, Cleveland, OH 44106 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2003年 / 107卷 / 46期

关键词：

D O I：

10.1021/jp034977c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Modifications in the vibrational properties of a single microparticle of LiMn2O4 induced by extraction and subsequent injection of Li+ into the lattice have been monitored in situ via simultaneous acquisition of Raman scattering spectra and cyclic voltammetry data in 1 M LiClO4 solutions in ethylene carbonate (EC):diethyl carbonate (DEC) mixtures (1:1 by volume). Statistical analyses of the spectra in the range 15 < SOD < 45%, where SOD represents the state of discharge (in percent) of the nominally fully charged material, i.e., lambda-MnO2, were found to be consistent with the coexistence of two distinct phases of lithiated metal oxide in agreement with information derived from in situ X-ray diffraction (XRD) measurements involving more conventional battery-type electrodes

引用

页码：12549 / 12554

页数：6

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