Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi                         0.6                         Co                         0.2                         Mn                         0.2                         O                         2                          cathode

Lili Liu; Shili Wang; Ziyan Zhang; Juntian Fan; Wen Qi; Shimou Chen

doi:10.1007/s11581-018-2641-0

Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi _0.6 Co _0.2 Mn _0.2 O ₂ cathode

Lili Liu
, Shili Wang
, Ziyan Zhang
, Juntian Fan
, Wen Qi
, Shimou Chen

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

29 Scopus citations

Abstract

In this work, fluoroethylene carbonate (FEC) is used as an additive to improve the interface stability between LiNi _0.6 Co _0.2 Mn _0.2 O ₂ (NCM622) electrode and electrolyte under high voltage (4.6 V vs Li/Li ⁺ ). The improved cycle stability and electrochemical impedance spectroscopy (EIS) studies imply the formation of robust, uniform and less-resistive film on the surface of NCM622. The results from TEM, SEM and XPS demonstrate that FEC facilitates the formation of CEI layer, and the FEC-derived CEI protects against not only the decomposition of the electrolyte solvent but also oxidation of the NCM622 electrode.

Original language	English
Pages (from-to)	1035-1043
Number of pages	9
Journal	Ionics
Volume	25
Issue number	3
DOIs	https://doi.org/10.1007/s11581-018-2641-0
State	Published - Mar 4 2019
Externally published	Yes

Funding

Funding information This work was financially supported by the National Natural Science Foundation of China (No. 21503006 and 91534109), National Key Projects for Fundamental Research and Development of China (No. 2017YFB0102200), Beijing Municipal Science and Technology Project (D171100005617001), Beijing Natural Science Foundation (No. 2184134), and Henan province science and technology cooperation project (172106000061).

Keywords

Electrolyte additives
Fluoroethylene carbonate
High voltage
Lithium-ion batteries

Access to Document

10.1007/s11581-018-2641-0

Cite this

Liu, L., Wang, S., Zhang, Z., Fan, J., Qi, W., & Chen, S. (2019). Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi _0.6 Co _0.2 Mn _0.2 O ₂ cathode Ionics, 25(3), 1035-1043. https://doi.org/10.1007/s11581-018-2641-0

Liu, Lili ; Wang, Shili ; Zhang, Ziyan et al. / Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi _0.6 Co _0.2 Mn _0.2 O ₂ cathode In: Ionics. 2019 ; Vol. 25, No. 3. pp. 1035-1043.

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title = " Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathode ",

abstract = " In this work, fluoroethylene carbonate (FEC) is used as an additive to improve the interface stability between LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622) electrode and electrolyte under high voltage (4.6 V vs Li/Li + ). The improved cycle stability and electrochemical impedance spectroscopy (EIS) studies imply the formation of robust, uniform and less-resistive film on the surface of NCM622. The results from TEM, SEM and XPS demonstrate that FEC facilitates the formation of CEI layer, and the FEC-derived CEI protects against not only the decomposition of the electrolyte solvent but also oxidation of the NCM622 electrode.",

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author = "Lili Liu and Shili Wang and Ziyan Zhang and Juntian Fan and Wen Qi and Shimou Chen",

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Liu, L, Wang, S, Zhang, Z, Fan, J, Qi, W & Chen, S 2019, ' Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi _0.6 Co _0.2 Mn _0.2 O ₂ cathode ', Ionics, vol. 25, no. 3, pp. 1035-1043. https://doi.org/10.1007/s11581-018-2641-0

Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi _0.6 Co _0.2 Mn _0.2 O ₂ cathode . / Liu, Lili; Wang, Shili; Zhang, Ziyan et al.
In: Ionics, Vol. 25, No. 3, 04.03.2019, p. 1035-1043.

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

TY - JOUR

T1 - Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathode

AU - Liu, Lili

AU - Wang, Shili

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AU - Fan, Juntian

AU - Qi, Wen

AU - Chen, Shimou

PY - 2019/3/4

Y1 - 2019/3/4

N2 - In this work, fluoroethylene carbonate (FEC) is used as an additive to improve the interface stability between LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622) electrode and electrolyte under high voltage (4.6 V vs Li/Li + ). The improved cycle stability and electrochemical impedance spectroscopy (EIS) studies imply the formation of robust, uniform and less-resistive film on the surface of NCM622. The results from TEM, SEM and XPS demonstrate that FEC facilitates the formation of CEI layer, and the FEC-derived CEI protects against not only the decomposition of the electrolyte solvent but also oxidation of the NCM622 electrode.

AB - In this work, fluoroethylene carbonate (FEC) is used as an additive to improve the interface stability between LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622) electrode and electrolyte under high voltage (4.6 V vs Li/Li + ). The improved cycle stability and electrochemical impedance spectroscopy (EIS) studies imply the formation of robust, uniform and less-resistive film on the surface of NCM622. The results from TEM, SEM and XPS demonstrate that FEC facilitates the formation of CEI layer, and the FEC-derived CEI protects against not only the decomposition of the electrolyte solvent but also oxidation of the NCM622 electrode.

KW - Electrolyte additives

KW - Fluoroethylene carbonate

KW - High voltage

KW - Lithium-ion batteries

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Liu L, Wang S, Zhang Z, Fan J, Qi W, Chen S. Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi _0.6 Co _0.2 Mn _0.2 O ₂ cathode Ionics. 2019 Mar 4;25(3):1035-1043. doi: 10.1007/s11581-018-2641-0