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

Won Sub Yoon, Kyung Keun Lee, Kwang Bum Kim

Research output: Contribution to journalConference article

29 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)303-307
Number of pages5
JournalJournal of Power Sources
Volume97-98
DOIs
Publication statusPublished - 2001 Jul 1
Event10th International Meeting on Lithium Batteries - Como, Italy
Duration: 2001 May 282001 Jun 2

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Secondary batteries
acrylic acid
Neutron diffraction
Electrochemical properties
Acrylics
electric batteries
Differential scanning calorimetry
Cathodes
X ray absorption spectroscopy
neutron diffraction
Acids
X ray absorption
heat measurement
synthesis
Cobalt
cathodes
Aluminum
Diffraction patterns
Thermodynamic stability
x rays

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

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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.",
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Synthesis of LiAlyCo1-yO2 using acrylic acid and its electrochemical properties for Li rechargeable batteries. / Yoon, Won Sub; Lee, Kyung Keun; Kim, Kwang Bum.

In: Journal of Power Sources, Vol. 97-98, 01.07.2001, p. 303-307.

Research output: Contribution to journalConference article

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

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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.

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