Highly Safe Ionic Liquid Electrolytes for Sodium-Ion Battery: Wide Electrochemical Window and Good Thermal Stability

Feng Wu; Na Zhu; Ying Bai; Libin Liu; Hang Zhou; Chuan Wu

doi:10.1021/acsami.6b07054

Highly Safe Ionic Liquid Electrolytes for Sodium-Ion Battery: Wide Electrochemical Window and Good Thermal Stability

Feng Wu, Na Zhu, Ying Bai^*, Libin Liu, Hang Zhou, Chuan Wu

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

103 Citations (Scopus)

Abstract

Novel ionic liquid (IL) electrolytes are prepared by mixing 1-ethyl-3-methylimidazolium-bis-tetrafluoroborate (EMIBF₄) with different concentrations of sodium salt (NaBF₄). The as-prepared IL electrolytes display wide electrochemical windows of ∼4 V (1-5 V), which are consistent with the quantum chemical theoretical calculation. The IL electrolyte with 0.1 M NaBF₄ shows excellent ionic conductivity, namely, 9.833 × 10^-3 S cm^-1 at 20 °C. In addition, nonflammability and good thermal stability are exhibited by combustion test and thermogravimetric analysis (TGA), which indicate the high safety of the IL electrolyte.

Original language	English
Pages (from-to)	21381-21386
Number of pages	6
Journal	ACS applied materials & interfaces
Volume	8
Issue number	33
DOIs	https://doi.org/10.1021/acsami.6b07054
Publication status	Published - 24 Aug 2016

Keywords

NaBF
electrolyte
ionic liquid
quantum chemical theoretical calculation
sodium-ion battery

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10.1021/acsami.6b07054

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title = "Highly Safe Ionic Liquid Electrolytes for Sodium-Ion Battery: Wide Electrochemical Window and Good Thermal Stability",

abstract = "Novel ionic liquid (IL) electrolytes are prepared by mixing 1-ethyl-3-methylimidazolium-bis-tetrafluoroborate (EMIBF4) with different concentrations of sodium salt (NaBF4). The as-prepared IL electrolytes display wide electrochemical windows of ∼4 V (1-5 V), which are consistent with the quantum chemical theoretical calculation. The IL electrolyte with 0.1 M NaBF4 shows excellent ionic conductivity, namely, 9.833 × 10-3 S cm-1 at 20 °C. In addition, nonflammability and good thermal stability are exhibited by combustion test and thermogravimetric analysis (TGA), which indicate the high safety of the IL electrolyte.",

keywords = "NaBF, electrolyte, ionic liquid, quantum chemical theoretical calculation, sodium-ion battery",

author = "Feng Wu and Na Zhu and Ying Bai and Libin Liu and Hang Zhou and Chuan Wu",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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language = "English",

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TY - JOUR

T1 - Highly Safe Ionic Liquid Electrolytes for Sodium-Ion Battery

T2 - Wide Electrochemical Window and Good Thermal Stability

AU - Wu, Feng

AU - Zhu, Na

AU - Bai, Ying

AU - Liu, Libin

AU - Zhou, Hang

AU - Wu, Chuan

PY - 2016/8/24

Y1 - 2016/8/24

N2 - Novel ionic liquid (IL) electrolytes are prepared by mixing 1-ethyl-3-methylimidazolium-bis-tetrafluoroborate (EMIBF4) with different concentrations of sodium salt (NaBF4). The as-prepared IL electrolytes display wide electrochemical windows of ∼4 V (1-5 V), which are consistent with the quantum chemical theoretical calculation. The IL electrolyte with 0.1 M NaBF4 shows excellent ionic conductivity, namely, 9.833 × 10-3 S cm-1 at 20 °C. In addition, nonflammability and good thermal stability are exhibited by combustion test and thermogravimetric analysis (TGA), which indicate the high safety of the IL electrolyte.

AB - Novel ionic liquid (IL) electrolytes are prepared by mixing 1-ethyl-3-methylimidazolium-bis-tetrafluoroborate (EMIBF4) with different concentrations of sodium salt (NaBF4). The as-prepared IL electrolytes display wide electrochemical windows of ∼4 V (1-5 V), which are consistent with the quantum chemical theoretical calculation. The IL electrolyte with 0.1 M NaBF4 shows excellent ionic conductivity, namely, 9.833 × 10-3 S cm-1 at 20 °C. In addition, nonflammability and good thermal stability are exhibited by combustion test and thermogravimetric analysis (TGA), which indicate the high safety of the IL electrolyte.

KW - NaBF

KW - electrolyte

KW - ionic liquid

KW - quantum chemical theoretical calculation

KW - sodium-ion battery

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DO - 10.1021/acsami.6b07054

M3 - Article

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EP - 21386

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

IS - 33

ER -

Highly Safe Ionic Liquid Electrolytes for Sodium-Ion Battery: Wide Electrochemical Window and Good Thermal Stability

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Keywords

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