Combustion-synthesized LiNi0.6Mn0.2Co 0.2O2 as cathode material for lithium ion batteries

Wook Ahn, Sung Nam Lim, Kyu Nam Jung, Sun Hwa Yeon, Kwang Bum Kim, Hoon Sub Song, Kyoung Hee Shin

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

A nitrate/urea mixture was used as fuel to simply combustion-synthesize LiNi0.6Co0.2Mn0.2O2 as a high-capacity cathode material for lithium ion batteries. The reaction formulas and physical properties of the resultant cathode materials sintered at various temperatures were examined using thermogravimetric analysis/simultaneous differential thermal analysis, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectrometry, and inductively coupled plasma/atomic emission spectrometry. The influence of sintering temperature on the electrochemical performance was evaluated by analyzing the charge/discharge profiles and cycling and rate-capability performances. The LiNi 0.6Co0.2Mn0.2O2 cathode sintered at 800 °C exhibited a discharge capacity of 170 mA h g-1 measured at a constant 20 mA g-1, 98.2% capacity retention after 30 cycles, and better rate capability than the cathodes sintered at 700, 900, and 1000 °C. The experimental results suggest that the enhanced electrochemical performance of the LiNi0.6Co0.2Mn0.2O2 cathode sintered at 800 °C is attributable to the pure, well-organized layered structure containing few mixed cations and to the shorter diffusion path resulting from the uniformly distributed nanoparticles.

Original languageEnglish
Pages (from-to)143-149
Number of pages7
JournalJournal of Alloys and Compounds
Volume609
DOIs
Publication statusPublished - 2014 Oct 5

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Cathodes
Spectrometry
Inductively coupled plasma
Photoelectrons
Urea
Differential thermal analysis
Thermogravimetric analysis
Cations
Nitrates
Sintering
Physical properties
Positive ions
Lithium-ion batteries
Nanoparticles
Transmission electron microscopy
X ray diffraction
X rays
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Ahn, Wook ; Lim, Sung Nam ; Jung, Kyu Nam ; Yeon, Sun Hwa ; Kim, Kwang Bum ; Song, Hoon Sub ; Shin, Kyoung Hee. / Combustion-synthesized LiNi0.6Mn0.2Co 0.2O2 as cathode material for lithium ion batteries. In: Journal of Alloys and Compounds. 2014 ; Vol. 609. pp. 143-149.
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Combustion-synthesized LiNi0.6Mn0.2Co 0.2O2 as cathode material for lithium ion batteries. / Ahn, Wook; Lim, Sung Nam; Jung, Kyu Nam; Yeon, Sun Hwa; Kim, Kwang Bum; Song, Hoon Sub; Shin, Kyoung Hee.

In: Journal of Alloys and Compounds, Vol. 609, 05.10.2014, p. 143-149.

Research output: Contribution to journalArticle

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AU - Kim, Kwang Bum

AU - Song, Hoon Sub

AU - Shin, Kyoung Hee

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