In Situ Raman Spectroscopy of Single Microparticle Li +-Intercalation Electrodes

Kaoru Dokko; Qingfang Shi; Ionel C. Stefan; Daniel Alberto Scherson

In Situ Raman Spectroscopy of Single Microparticle Li +-Intercalation Electrodes

Kaoru Dokko, Qingfang Shi, Ionel C. Stefan, Daniel Alberto Scherson^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

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., λ-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.

Original language	English
Pages (from-to)	12549-12554
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	107
Issue number	46
Publication status	Published - 2003 Nov 20
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry

Cite this

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title = "In Situ Raman Spectroscopy of Single Microparticle Li +-Intercalation Electrodes",

abstract = "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., λ-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.",

author = "Kaoru Dokko and Qingfang Shi and Stefan, {Ionel C.} and Scherson, {Daniel Alberto}",

year = "2003",

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T1 - In Situ Raman Spectroscopy of Single Microparticle Li +-Intercalation Electrodes

AU - Dokko, Kaoru

AU - Shi, Qingfang

AU - Stefan, Ionel C.

AU - Scherson, Daniel Alberto

PY - 2003/11/20

Y1 - 2003/11/20

N2 - 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., λ-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.

AB - 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., λ-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.

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SN - 1520-6106

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JF - Journal of Physical Chemistry B Materials

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ER -

In Situ Raman Spectroscopy of Single Microparticle Li +-Intercalation Electrodes

Abstract

ASJC Scopus subject areas

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