Improvement of structural and electrochemical properties of AlF3-coated Li[Ni1/3Co1/3Mn1/3]O2 cathode materials on high voltage region

B. C. Park; H. B. Kim; S. T. Myung; K. Amine; I. Belharouak; S. M. Lee; Y. K. Sun

doi:10.1016/j.jpowsour.2007.08.034

Improvement of structural and electrochemical properties of AlF₃-coated Li[Ni_1/3Co_1/3Mn_1/3]O₂ cathode materials on high voltage region

B. C. Park, H. B. Kim, S. T. Myung, K. Amine, I. Belharouak, S. M. Lee, Y. K. Sun

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

149 Scopus citations

Abstract

The particle surface of Li[Ni_1/3Co_1/3Mn_1/3]O₂ was modified by AlF₃ as a new coating material to improve the electrochemical properties in the high cutoff voltage of 4.5 V. The AlF₃-coated Li[Ni_1/3Co_1/3Mn_1/3]O₂ showed no difference in the bulk structure compared with the pristine one and the uniform AlF₃ coating layers whose thickness is of about 10 nm covered Li[Ni_1/3Co_1/3Mn_1/3]O₂ particles, as confirmed by a transmission electron microscopy. The AlF₃ coating on Li[Ni_1/3Co_1/3Mn_1/3]O₂ particles improved the overall electrochemical properties such as the cyclability, rate capability and thermal stability compared with those of the pristine Li[Ni_1/3Co_1/3Mn_1/3]O₂. Such enhancements were attributed to the presence of the stable AlF₃ layer which acts as the interfacial stabilizer on the surface of Li[Ni_1/3Co_1/3Mn_1/3]O₂.

Original language	English
Pages (from-to)	826-831
Number of pages	6
Journal	Journal of Power Sources
Volume	178
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2007.08.034
State	Published - Apr 1 2008
Externally published	Yes

Funding

This work was supported by University IT Research Center Project.

Funders	Funder number
University IT Research Center

Keywords

AlF
Battery
Cathode
Coating
High voltage
Lithium

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2007.08.034

Cite this

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title = "Improvement of structural and electrochemical properties of AlF3-coated Li[Ni1/3Co1/3Mn1/3]O2 cathode materials on high voltage region",

abstract = "The particle surface of Li[Ni1/3Co1/3Mn1/3]O2 was modified by AlF3 as a new coating material to improve the electrochemical properties in the high cutoff voltage of 4.5 V. The AlF3-coated Li[Ni1/3Co1/3Mn1/3]O2 showed no difference in the bulk structure compared with the pristine one and the uniform AlF3 coating layers whose thickness is of about 10 nm covered Li[Ni1/3Co1/3Mn1/3]O2 particles, as confirmed by a transmission electron microscopy. The AlF3 coating on Li[Ni1/3Co1/3Mn1/3]O2 particles improved the overall electrochemical properties such as the cyclability, rate capability and thermal stability compared with those of the pristine Li[Ni1/3Co1/3Mn1/3]O2. Such enhancements were attributed to the presence of the stable AlF3 layer which acts as the interfacial stabilizer on the surface of Li[Ni1/3Co1/3Mn1/3]O2.",

keywords = "AlF, Battery, Cathode, Coating, High voltage, Lithium",

author = "Park, {B. C.} and Kim, {H. B.} and Myung, {S. T.} and K. Amine and I. Belharouak and Lee, {S. M.} and Sun, {Y. K.}",

year = "2008",

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doi = "10.1016/j.jpowsour.2007.08.034",

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T1 - Improvement of structural and electrochemical properties of AlF3-coated Li[Ni1/3Co1/3Mn1/3]O2 cathode materials on high voltage region

AU - Park, B. C.

AU - Kim, H. B.

AU - Myung, S. T.

AU - Amine, K.

AU - Belharouak, I.

AU - Lee, S. M.

AU - Sun, Y. K.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - The particle surface of Li[Ni1/3Co1/3Mn1/3]O2 was modified by AlF3 as a new coating material to improve the electrochemical properties in the high cutoff voltage of 4.5 V. The AlF3-coated Li[Ni1/3Co1/3Mn1/3]O2 showed no difference in the bulk structure compared with the pristine one and the uniform AlF3 coating layers whose thickness is of about 10 nm covered Li[Ni1/3Co1/3Mn1/3]O2 particles, as confirmed by a transmission electron microscopy. The AlF3 coating on Li[Ni1/3Co1/3Mn1/3]O2 particles improved the overall electrochemical properties such as the cyclability, rate capability and thermal stability compared with those of the pristine Li[Ni1/3Co1/3Mn1/3]O2. Such enhancements were attributed to the presence of the stable AlF3 layer which acts as the interfacial stabilizer on the surface of Li[Ni1/3Co1/3Mn1/3]O2.

AB - The particle surface of Li[Ni1/3Co1/3Mn1/3]O2 was modified by AlF3 as a new coating material to improve the electrochemical properties in the high cutoff voltage of 4.5 V. The AlF3-coated Li[Ni1/3Co1/3Mn1/3]O2 showed no difference in the bulk structure compared with the pristine one and the uniform AlF3 coating layers whose thickness is of about 10 nm covered Li[Ni1/3Co1/3Mn1/3]O2 particles, as confirmed by a transmission electron microscopy. The AlF3 coating on Li[Ni1/3Co1/3Mn1/3]O2 particles improved the overall electrochemical properties such as the cyclability, rate capability and thermal stability compared with those of the pristine Li[Ni1/3Co1/3Mn1/3]O2. Such enhancements were attributed to the presence of the stable AlF3 layer which acts as the interfacial stabilizer on the surface of Li[Ni1/3Co1/3Mn1/3]O2.

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