Infrared and Raman spectroscopy of nanostructured LT-LiCoO2 cathodes for Li-ion rechargeable batteries

Christopher M. Burba; K. M. Shaju; Peter George Bruce; Roger Frech

doi:10.1016/j.vibspec.2009.06.002

Infrared and Raman spectroscopy of nanostructured LT-LiCoO2 cathodes for Li-ion rechargeable batteries

Christopher M. Burba, K. M. Shaju, Peter George Bruce, Roger Frech

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

Abstract

Nano-engineered electrodes, such as porous LiCoO2, exhibit improved electrochemical performance compared to the non-porous LiCoO2 analogue. Structural studies of the pore walls composing the nanostructured LiCoO2 materials have focused on long-range (diffraction) methods. However, the powder diffraction patterns of the low-temperature (LT) and high-temperature (HT) phases of nonporous LiCoO2 are very similar and distinguishing the two phases can be challenging. In this work, infrared and Raman spectroscopy are used to unambiguously assign the LiCoO2 crystalline domains present in two porous compounds (nanowire LiCoO2 and mesoporous LiCoO2) as LT-LiCoO2, Moreover, the appearance of new bands in the infrared spectrum of LiCoO2 nanowires might signal the presence of disordered LiCoO2 domains that are XRD silent. (C) 2009 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	248-250
Number of pages	3
Journal	Vibrational Spectroscopy
Volume	51
Issue number	2
DOIs	https://doi.org/10.1016/j.vibspec.2009.06.002
Publication status	Published - 10 Nov 2009

Keywords

Lithium batteries
LiCoO2 cathodes
Mesoporous materials
IR spectroscopy
Raman spectroscopy
LITHIUM BATTERIES
NEUTRON-DIFFRACTION
COBALT-OXIDES
ELECTROCHEMISTRY
ELECTRODE
NANOWIRE
CO3O4

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title = "Infrared and Raman spectroscopy of nanostructured LT-LiCoO2 cathodes for Li-ion rechargeable batteries",

abstract = "Nano-engineered electrodes, such as porous LiCoO2, exhibit improved electrochemical performance compared to the non-porous LiCoO2 analogue. Structural studies of the pore walls composing the nanostructured LiCoO2 materials have focused on long-range (diffraction) methods. However, the powder diffraction patterns of the low-temperature (LT) and high-temperature (HT) phases of nonporous LiCoO2 are very similar and distinguishing the two phases can be challenging. In this work, infrared and Raman spectroscopy are used to unambiguously assign the LiCoO2 crystalline domains present in two porous compounds (nanowire LiCoO2 and mesoporous LiCoO2) as LT-LiCoO2, Moreover, the appearance of new bands in the infrared spectrum of LiCoO2 nanowires might signal the presence of disordered LiCoO2 domains that are XRD silent. (C) 2009 Elsevier B.V. All rights reserved.",

keywords = "Lithium batteries, LiCoO2 cathodes, Mesoporous materials, IR spectroscopy, Raman spectroscopy, LITHIUM BATTERIES, NEUTRON-DIFFRACTION, COBALT-OXIDES, ELECTROCHEMISTRY, ELECTRODE, NANOWIRE, CO3O4",

author = "Burba, {Christopher M.} and Shaju, {K. M.} and Bruce, {Peter George} and Roger Frech",

year = "2009",

month = nov,

day = "10",

doi = "10.1016/j.vibspec.2009.06.002",

language = "English",

volume = "51",

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T1 - Infrared and Raman spectroscopy of nanostructured LT-LiCoO2 cathodes for Li-ion rechargeable batteries

AU - Burba, Christopher M.

AU - Shaju, K. M.

AU - Bruce, Peter George

AU - Frech, Roger

PY - 2009/11/10

Y1 - 2009/11/10

N2 - Nano-engineered electrodes, such as porous LiCoO2, exhibit improved electrochemical performance compared to the non-porous LiCoO2 analogue. Structural studies of the pore walls composing the nanostructured LiCoO2 materials have focused on long-range (diffraction) methods. However, the powder diffraction patterns of the low-temperature (LT) and high-temperature (HT) phases of nonporous LiCoO2 are very similar and distinguishing the two phases can be challenging. In this work, infrared and Raman spectroscopy are used to unambiguously assign the LiCoO2 crystalline domains present in two porous compounds (nanowire LiCoO2 and mesoporous LiCoO2) as LT-LiCoO2, Moreover, the appearance of new bands in the infrared spectrum of LiCoO2 nanowires might signal the presence of disordered LiCoO2 domains that are XRD silent. (C) 2009 Elsevier B.V. All rights reserved.

AB - Nano-engineered electrodes, such as porous LiCoO2, exhibit improved electrochemical performance compared to the non-porous LiCoO2 analogue. Structural studies of the pore walls composing the nanostructured LiCoO2 materials have focused on long-range (diffraction) methods. However, the powder diffraction patterns of the low-temperature (LT) and high-temperature (HT) phases of nonporous LiCoO2 are very similar and distinguishing the two phases can be challenging. In this work, infrared and Raman spectroscopy are used to unambiguously assign the LiCoO2 crystalline domains present in two porous compounds (nanowire LiCoO2 and mesoporous LiCoO2) as LT-LiCoO2, Moreover, the appearance of new bands in the infrared spectrum of LiCoO2 nanowires might signal the presence of disordered LiCoO2 domains that are XRD silent. (C) 2009 Elsevier B.V. All rights reserved.

KW - Lithium batteries

KW - LiCoO2 cathodes

KW - Mesoporous materials

KW - IR spectroscopy

KW - Raman spectroscopy

KW - LITHIUM BATTERIES

KW - NEUTRON-DIFFRACTION

KW - COBALT-OXIDES

KW - ELECTROCHEMISTRY

KW - ELECTRODE

KW - NANOWIRE

KW - CO3O4

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DO - 10.1016/j.vibspec.2009.06.002

M3 - Article

SN - 0924-2031

VL - 51

SP - 248

EP - 250

JO - Vibrational Spectroscopy

JF - Vibrational Spectroscopy

IS - 2

ER -

Infrared and Raman spectroscopy of nanostructured LT-LiCoO2 cathodes for Li-ion rechargeable batteries

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Keywords

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