Synthesis of LiAlyCo1-yO2 using acrylic acid and its electrochemical properties for Li rechargeable batteries

Won Sub Yoon; Kyung Keun Lee; Kwang Bum Kim

doi:10.1016/S0378-7753(01)00515-8

Synthesis of LiAl_yCo_1-yO₂ using acrylic acid and its electrochemical properties for Li rechargeable batteries

Won Sub Yoon
, Kyung Keun Lee
, Kwang Bum Kim

Yonsei University

Research output: Contribution to journal › Conference article › peer-review

34 Scopus citations

Abstract

The structure and electrochemical properties of LiAl_yCo_1-yO₂ cathodes for Li rechargeable batteries have been closely examined by neutron diffraction, X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), differential scanning calorimetry (DSC), and electrochemical methods. Neutron diffraction patterns and Co K-edge X-ray absorption near-edge structure (XANES) spectra of LiAl_0.25Co_0.75O₂ revealed that aluminum and cobalt ions were statistically distributed in octahedral 3b sites of the ordered α-NaFeO₂ structure. The DSC scan of Li_0.5Al_0.25Co_0.75O₂ showed an increase in the peak temperature and reduction in the exothermic peak compared to those of Li_0.5CoO₂, and it indicates that Al-doped LiCoO₂ shows the good thermal stability of the cathode and reduction of the heat of reaction.

Original language	English
Pages (from-to)	303-307
Number of pages	5
Journal	Journal of Power Sources
Volume	97-98
DOIs	https://doi.org/10.1016/S0378-7753(01)00515-8
State	Published - Jul 2001
Externally published	Yes
Event	10th International Meeting on Lithium Batteries - Como, Italy Duration: 28 May 2001 → 2 Jun 2001

Keywords

LiAlCoO
Lithium rechargeable batteries
Sol-gel process
XANES

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10.1016/S0378-7753(01)00515-8

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title = "Synthesis of LiAlyCo1-yO2 using acrylic acid and its electrochemical properties for Li rechargeable batteries",

abstract = "The structure and electrochemical properties of LiAlyCo1-yO2 cathodes for Li rechargeable batteries have been closely examined by neutron diffraction, X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), differential scanning calorimetry (DSC), and electrochemical methods. Neutron diffraction patterns and Co K-edge X-ray absorption near-edge structure (XANES) spectra of LiAl0.25Co0.75O2 revealed that aluminum and cobalt ions were statistically distributed in octahedral 3b sites of the ordered α-NaFeO2 structure. The DSC scan of Li0.5Al0.25Co0.75O2 showed an increase in the peak temperature and reduction in the exothermic peak compared to those of Li0.5CoO2, and it indicates that Al-doped LiCoO2 shows the good thermal stability of the cathode and reduction of the heat of reaction.",

keywords = "LiAlCoO, Lithium rechargeable batteries, Sol-gel process, XANES",

author = "Yoon, \{Won Sub\} and Lee, \{Kyung Keun\} and Kim, \{Kwang Bum\}",

year = "2001",

month = jul,

doi = "10.1016/S0378-7753(01)00515-8",

language = "English",

volume = "97-98",

pages = "303--307",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

note = "10th International Meeting on Lithium Batteries ; Conference date: 28-05-2001 Through 02-06-2001",

}

TY - JOUR

T1 - Synthesis of LiAlyCo1-yO2 using acrylic acid and its electrochemical properties for Li rechargeable batteries

AU - Yoon, Won Sub

AU - Lee, Kyung Keun

AU - Kim, Kwang Bum

PY - 2001/7

Y1 - 2001/7

N2 - The structure and electrochemical properties of LiAlyCo1-yO2 cathodes for Li rechargeable batteries have been closely examined by neutron diffraction, X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), differential scanning calorimetry (DSC), and electrochemical methods. Neutron diffraction patterns and Co K-edge X-ray absorption near-edge structure (XANES) spectra of LiAl0.25Co0.75O2 revealed that aluminum and cobalt ions were statistically distributed in octahedral 3b sites of the ordered α-NaFeO2 structure. The DSC scan of Li0.5Al0.25Co0.75O2 showed an increase in the peak temperature and reduction in the exothermic peak compared to those of Li0.5CoO2, and it indicates that Al-doped LiCoO2 shows the good thermal stability of the cathode and reduction of the heat of reaction.

AB - The structure and electrochemical properties of LiAlyCo1-yO2 cathodes for Li rechargeable batteries have been closely examined by neutron diffraction, X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), differential scanning calorimetry (DSC), and electrochemical methods. Neutron diffraction patterns and Co K-edge X-ray absorption near-edge structure (XANES) spectra of LiAl0.25Co0.75O2 revealed that aluminum and cobalt ions were statistically distributed in octahedral 3b sites of the ordered α-NaFeO2 structure. The DSC scan of Li0.5Al0.25Co0.75O2 showed an increase in the peak temperature and reduction in the exothermic peak compared to those of Li0.5CoO2, and it indicates that Al-doped LiCoO2 shows the good thermal stability of the cathode and reduction of the heat of reaction.

KW - LiAlCoO

KW - Lithium rechargeable batteries

KW - Sol-gel process

KW - XANES

UR - https://www.scopus.com/pages/publications/0035395034

U2 - 10.1016/S0378-7753(01)00515-8

DO - 10.1016/S0378-7753(01)00515-8

M3 - Conference article

AN - SCOPUS:0035395034

SN - 0378-7753

VL - 97-98

SP - 303

EP - 307

JO - Journal of Power Sources

JF - Journal of Power Sources

T2 - 10th International Meeting on Lithium Batteries

Y2 - 28 May 2001 through 2 June 2001

ER -

Synthesis of LiAl_yCo_1-yO₂ using acrylic acid and its electrochemical properties for Li rechargeable batteries

Abstract

Keywords

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