An investigation of functionalized electrolyte using succinonitrile additive for high voltage lithium-ion batteries

Renjie Chen; Fan Liu; Yan Chen; Yusheng Ye; Yongxin Huang; Feng Wu; Li Li

doi:10.1016/j.jpowsour.2015.10.105

An investigation of functionalized electrolyte using succinonitrile additive for high voltage lithium-ion batteries

Renjie Chen^*, Fan Liu, Yan Chen, Yusheng Ye, Yongxin Huang, Feng Wu, Li Li

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

143 Citations (Scopus)

Abstract

Succinonitrile (SN) has been used as functional additive to improve the thermal stability and broaden the oxidation electrochemical window of commercial electrolyte 1 M LiPF₆/EC/DEC (1:1, by volume) for high-voltage LIBs (cathode: Li_1.2Ni_0.2Mn_0.6O₂, anode: Li). 1 wt % SN-based electrolyte showed a wide electrochemical oxidation window of 5.4 V vs Li⁺/Li and excellent thermal stability demonstrated by thermogravimetry (TG) and X-ray photoelectron spectroscopy (XPS), as well as theoretical analysis according to molecular orbital theory. The LNMO (Li_1.2Ni_0.2Mn_0.6O₂) battery with 1 wt % SN-based electrolyte showed better cyclability and capacity retention when charged to higher cut-off voltage. The improved battery performance is mainly attributed to the formation of uniform cathode electrolyte interface (CEI) formed by interfacial reactions between the LNMO cathode and electrolyte. The outcome of this work and the continuous research on this subject can generate critical knowledge for designing thermal stability electrolytes for large format lithium-ion batteries.

Original language	English
Pages (from-to)	70-77
Number of pages	8
Journal	Journal of Power Sources
Volume	306
DOIs	https://doi.org/10.1016/j.jpowsour.2015.10.105
Publication status	Published - 29 Feb 2016

Keywords

Cathode electrolyte interface
High voltage
Succinonitrile
Thermal stability

UN SDGs

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

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10.1016/j.jpowsour.2015.10.105

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title = "An investigation of functionalized electrolyte using succinonitrile additive for high voltage lithium-ion batteries",

abstract = "Succinonitrile (SN) has been used as functional additive to improve the thermal stability and broaden the oxidation electrochemical window of commercial electrolyte 1 M LiPF6/EC/DEC (1:1, by volume) for high-voltage LIBs (cathode: Li1.2Ni0.2Mn0.6O2, anode: Li). 1 wt % SN-based electrolyte showed a wide electrochemical oxidation window of 5.4 V vs Li+/Li and excellent thermal stability demonstrated by thermogravimetry (TG) and X-ray photoelectron spectroscopy (XPS), as well as theoretical analysis according to molecular orbital theory. The LNMO (Li1.2Ni0.2Mn0.6O2) battery with 1 wt % SN-based electrolyte showed better cyclability and capacity retention when charged to higher cut-off voltage. The improved battery performance is mainly attributed to the formation of uniform cathode electrolyte interface (CEI) formed by interfacial reactions between the LNMO cathode and electrolyte. The outcome of this work and the continuous research on this subject can generate critical knowledge for designing thermal stability electrolytes for large format lithium-ion batteries.",

keywords = "Cathode electrolyte interface, High voltage, Succinonitrile, Thermal stability",

author = "Renjie Chen and Fan Liu and Yan Chen and Yusheng Ye and Yongxin Huang and Feng Wu and Li Li",

year = "2016",

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day = "29",

doi = "10.1016/j.jpowsour.2015.10.105",

language = "English",

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pages = "70--77",

journal = "Journal of Power Sources",

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T1 - An investigation of functionalized electrolyte using succinonitrile additive for high voltage lithium-ion batteries

AU - Chen, Renjie

AU - Liu, Fan

AU - Chen, Yan

AU - Ye, Yusheng

AU - Huang, Yongxin

AU - Wu, Feng

AU - Li, Li

PY - 2016/2/29

Y1 - 2016/2/29

N2 - Succinonitrile (SN) has been used as functional additive to improve the thermal stability and broaden the oxidation electrochemical window of commercial electrolyte 1 M LiPF6/EC/DEC (1:1, by volume) for high-voltage LIBs (cathode: Li1.2Ni0.2Mn0.6O2, anode: Li). 1 wt % SN-based electrolyte showed a wide electrochemical oxidation window of 5.4 V vs Li+/Li and excellent thermal stability demonstrated by thermogravimetry (TG) and X-ray photoelectron spectroscopy (XPS), as well as theoretical analysis according to molecular orbital theory. The LNMO (Li1.2Ni0.2Mn0.6O2) battery with 1 wt % SN-based electrolyte showed better cyclability and capacity retention when charged to higher cut-off voltage. The improved battery performance is mainly attributed to the formation of uniform cathode electrolyte interface (CEI) formed by interfacial reactions between the LNMO cathode and electrolyte. The outcome of this work and the continuous research on this subject can generate critical knowledge for designing thermal stability electrolytes for large format lithium-ion batteries.

AB - Succinonitrile (SN) has been used as functional additive to improve the thermal stability and broaden the oxidation electrochemical window of commercial electrolyte 1 M LiPF6/EC/DEC (1:1, by volume) for high-voltage LIBs (cathode: Li1.2Ni0.2Mn0.6O2, anode: Li). 1 wt % SN-based electrolyte showed a wide electrochemical oxidation window of 5.4 V vs Li+/Li and excellent thermal stability demonstrated by thermogravimetry (TG) and X-ray photoelectron spectroscopy (XPS), as well as theoretical analysis according to molecular orbital theory. The LNMO (Li1.2Ni0.2Mn0.6O2) battery with 1 wt % SN-based electrolyte showed better cyclability and capacity retention when charged to higher cut-off voltage. The improved battery performance is mainly attributed to the formation of uniform cathode electrolyte interface (CEI) formed by interfacial reactions between the LNMO cathode and electrolyte. The outcome of this work and the continuous research on this subject can generate critical knowledge for designing thermal stability electrolytes for large format lithium-ion batteries.

KW - Cathode electrolyte interface

KW - High voltage

KW - Succinonitrile

KW - Thermal stability

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U2 - 10.1016/j.jpowsour.2015.10.105

DO - 10.1016/j.jpowsour.2015.10.105

M3 - Article

AN - SCOPUS:84949564762

SN - 0378-7753

VL - 306

SP - 70

EP - 77

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

An investigation of functionalized electrolyte using succinonitrile additive for high voltage lithium-ion batteries

Abstract

Keywords

UN SDGs

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