Simple, robust metal fluoride coating on layered Li1.23Ni 0.13Co0.14Mn0.56O2 and its effects on enhanced electrochemical properties

Ji Won Min, Jihyeon Gim, Jinju Song, Won Hee Ryu, Jong Won Lee, Yong Il Kim, Jaekook Kim, Won Bin Im

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In present study, fluorine substituted Li1.23Ni 0.13Co0.14Mn0.56O2-zFz (z = 0-0.20) are synthesized by simple and low-temperature co-precipitation process and observed enhancement in their electrochemical properties are investigated as function of fluorine substitutions. 19F MAS NMR analyses revealed the presence of fluorine as metal fluoride on the surface, and as oxy-fluoride in bulk Li1.23Ni0.13Co 0.14Mn0.56O2-zFz. Li 1.23Ni0.13Co0.14Mn0.56O 2-zFz (z = 0.15) showed improved cycling performance and reduced cell impedance as a result of the fluorine doping. In addition, fluorine substitution controlled the amount of stabilizing transition metals in the lithium layers of spinel-like regions, which in turn resulted in countering the capacity loss and voltage decay compared to Li1.23Ni 0.13Co0.14Mn0.56O2.

Original languageEnglish
Pages (from-to)10-17
Number of pages8
JournalElectrochimica Acta
Volume100
DOIs
StatePublished - 2013 Jun 30

Fingerprint

Fluorine
Fluorides
Electrochemical properties
Metals
Coatings
Substitution reactions
Coprecipitation
Lithium
Transition metals
Doping (additives)
Nuclear magnetic resonance
Electric potential
Temperature

Keywords

  • Cathode material
  • Coating
  • Fluorine doping
  • Layered oxide
  • Lithium ion battery

Cite this

Min, Ji Won ; Gim, Jihyeon ; Song, Jinju ; Ryu, Won Hee ; Lee, Jong Won ; Kim, Yong Il ; Kim, Jaekook ; Im, Won Bin. / Simple, robust metal fluoride coating on layered Li1.23Ni 0.13Co0.14Mn0.56O2 and its effects on enhanced electrochemical properties. In: Electrochimica Acta. 2013 ; Vol. 100. pp. 10-17.
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abstract = "In present study, fluorine substituted Li1.23Ni 0.13Co0.14Mn0.56O2-zFz (z = 0-0.20) are synthesized by simple and low-temperature co-precipitation process and observed enhancement in their electrochemical properties are investigated as function of fluorine substitutions. 19F MAS NMR analyses revealed the presence of fluorine as metal fluoride on the surface, and as oxy-fluoride in bulk Li1.23Ni0.13Co 0.14Mn0.56O2-zFz. Li 1.23Ni0.13Co0.14Mn0.56O 2-zFz (z = 0.15) showed improved cycling performance and reduced cell impedance as a result of the fluorine doping. In addition, fluorine substitution controlled the amount of stabilizing transition metals in the lithium layers of spinel-like regions, which in turn resulted in countering the capacity loss and voltage decay compared to Li1.23Ni 0.13Co0.14Mn0.56O2.",
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Simple, robust metal fluoride coating on layered Li1.23Ni 0.13Co0.14Mn0.56O2 and its effects on enhanced electrochemical properties. / Min, Ji Won; Gim, Jihyeon; Song, Jinju; Ryu, Won Hee; Lee, Jong Won; Kim, Yong Il; Kim, Jaekook; Im, Won Bin.

In: Electrochimica Acta, Vol. 100, 30.06.2013, p. 10-17.

Research output: Contribution to journalArticle

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AU - Min, Ji Won

AU - Gim, Jihyeon

AU - Song, Jinju

AU - Ryu, Won Hee

AU - Lee, Jong Won

AU - Kim, Yong Il

AU - Kim, Jaekook

AU - Im, Won Bin

PY - 2013/6/30

Y1 - 2013/6/30

N2 - In present study, fluorine substituted Li1.23Ni 0.13Co0.14Mn0.56O2-zFz (z = 0-0.20) are synthesized by simple and low-temperature co-precipitation process and observed enhancement in their electrochemical properties are investigated as function of fluorine substitutions. 19F MAS NMR analyses revealed the presence of fluorine as metal fluoride on the surface, and as oxy-fluoride in bulk Li1.23Ni0.13Co 0.14Mn0.56O2-zFz. Li 1.23Ni0.13Co0.14Mn0.56O 2-zFz (z = 0.15) showed improved cycling performance and reduced cell impedance as a result of the fluorine doping. In addition, fluorine substitution controlled the amount of stabilizing transition metals in the lithium layers of spinel-like regions, which in turn resulted in countering the capacity loss and voltage decay compared to Li1.23Ni 0.13Co0.14Mn0.56O2.

AB - In present study, fluorine substituted Li1.23Ni 0.13Co0.14Mn0.56O2-zFz (z = 0-0.20) are synthesized by simple and low-temperature co-precipitation process and observed enhancement in their electrochemical properties are investigated as function of fluorine substitutions. 19F MAS NMR analyses revealed the presence of fluorine as metal fluoride on the surface, and as oxy-fluoride in bulk Li1.23Ni0.13Co 0.14Mn0.56O2-zFz. Li 1.23Ni0.13Co0.14Mn0.56O 2-zFz (z = 0.15) showed improved cycling performance and reduced cell impedance as a result of the fluorine doping. In addition, fluorine substitution controlled the amount of stabilizing transition metals in the lithium layers of spinel-like regions, which in turn resulted in countering the capacity loss and voltage decay compared to Li1.23Ni 0.13Co0.14Mn0.56O2.

KW - Cathode material

KW - Coating

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