Fluoroethylene carbonate as an important component in electrolyte solutions for high-voltage lithium batteries: Role of surface chemistry on the cathode

Elena Markevich; Gregory Salitra; Katia Fridman; Ronit Sharabi; Gregory Gershinsky; Arnd Garsuch; Guenter Semrau; Michael A. Schmidt; Doron Aurbach

doi:10.1021/la501368y

Fluoroethylene carbonate as an important component in electrolyte solutions for high-voltage lithium batteries: Role of surface chemistry on the cathode

Elena Markevich, Gregory Salitra, Katia Fridman, Ronit Sharabi, Gregory Gershinsky, Arnd Garsuch, Guenter Semrau, Michael A. Schmidt, Doron Aurbach

Department of Chemistry

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172 Scopus citations

Abstract

The effect of fluorinated ethylene carbonate (FEC) as a cosolvent in alkyl carbonates/LiPF₆on the cycling performance of high-voltage (5 V) cathodes for Li-ion batteries was investigated using electrochemical tools, X-ray photoelectron spectroscopy (XPS), and high-resolution scanning electron microscopy (HRSEM). An excellent cycling stability of LiCoPO₄/Li, LiNi_0.5Mn_1.5O₄/Si, and LiCoPO₄/Si cells and a reasonable cycling of LiCoPO₄/Si cells was achieved by replacing the commonly used cosolvent ethylene carbonate (EC) by FEC in electrolyte solutions for high-voltage Li-ion batteries. The roles of FEC in the improvement of the cycling performance of high-voltage Li-ion cells and of surface chemistry on the cathode are discussed.

Original language	English
Pages (from-to)	7414-7424
Number of pages	11
Journal	Langmuir
Volume	30
Issue number	25
DOIs	https://doi.org/10.1021/la501368y
State	Published - 1 Jul 2014

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title = "Fluoroethylene carbonate as an important component in electrolyte solutions for high-voltage lithium batteries: Role of surface chemistry on the cathode",

abstract = "The effect of fluorinated ethylene carbonate (FEC) as a cosolvent in alkyl carbonates/LiPF6on the cycling performance of high-voltage (5 V) cathodes for Li-ion batteries was investigated using electrochemical tools, X-ray photoelectron spectroscopy (XPS), and high-resolution scanning electron microscopy (HRSEM). An excellent cycling stability of LiCoPO4/Li, LiNi0.5Mn1.5O4/Si, and LiCoPO4/Si cells and a reasonable cycling of LiCoPO4/Si cells was achieved by replacing the commonly used cosolvent ethylene carbonate (EC) by FEC in electrolyte solutions for high-voltage Li-ion batteries. The roles of FEC in the improvement of the cycling performance of high-voltage Li-ion cells and of surface chemistry on the cathode are discussed.",

author = "Elena Markevich and Gregory Salitra and Katia Fridman and Ronit Sharabi and Gregory Gershinsky and Arnd Garsuch and Guenter Semrau and Schmidt, {Michael A.} and Doron Aurbach",

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T1 - Fluoroethylene carbonate as an important component in electrolyte solutions for high-voltage lithium batteries

T2 - Role of surface chemistry on the cathode

AU - Markevich, Elena

AU - Salitra, Gregory

AU - Fridman, Katia

AU - Sharabi, Ronit

AU - Gershinsky, Gregory

AU - Garsuch, Arnd

AU - Semrau, Guenter

AU - Schmidt, Michael A.

AU - Aurbach, Doron

PY - 2014/7/1

Y1 - 2014/7/1

N2 - The effect of fluorinated ethylene carbonate (FEC) as a cosolvent in alkyl carbonates/LiPF6on the cycling performance of high-voltage (5 V) cathodes for Li-ion batteries was investigated using electrochemical tools, X-ray photoelectron spectroscopy (XPS), and high-resolution scanning electron microscopy (HRSEM). An excellent cycling stability of LiCoPO4/Li, LiNi0.5Mn1.5O4/Si, and LiCoPO4/Si cells and a reasonable cycling of LiCoPO4/Si cells was achieved by replacing the commonly used cosolvent ethylene carbonate (EC) by FEC in electrolyte solutions for high-voltage Li-ion batteries. The roles of FEC in the improvement of the cycling performance of high-voltage Li-ion cells and of surface chemistry on the cathode are discussed.

AB - The effect of fluorinated ethylene carbonate (FEC) as a cosolvent in alkyl carbonates/LiPF6on the cycling performance of high-voltage (5 V) cathodes for Li-ion batteries was investigated using electrochemical tools, X-ray photoelectron spectroscopy (XPS), and high-resolution scanning electron microscopy (HRSEM). An excellent cycling stability of LiCoPO4/Li, LiNi0.5Mn1.5O4/Si, and LiCoPO4/Si cells and a reasonable cycling of LiCoPO4/Si cells was achieved by replacing the commonly used cosolvent ethylene carbonate (EC) by FEC in electrolyte solutions for high-voltage Li-ion batteries. The roles of FEC in the improvement of the cycling performance of high-voltage Li-ion cells and of surface chemistry on the cathode are discussed.

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Fluoroethylene carbonate as an important component in electrolyte solutions for high-voltage lithium batteries: Role of surface chemistry on the cathode

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