PEU-based gel polymer electrolytes for lithium-ion batteries

Chuan Wu; Chun Hua Pan; Feng Wu; Ying Bai; Lin Ye; Zeng Guo Feng

PEU-based gel polymer electrolytes for lithium-ion batteries

Chuan Wu^*, Chun Hua Pan, Feng Wu, Ying Bai, Lin Ye, Zeng Guo Feng

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

1 Citation (Scopus)

Abstract

Cross-linked gel polymer electrolytes based on PEU were prepared from the reaction of the hyper-branched polyether (PHEMO) with 4, 4'-diphenylmethane dissocyanate (MDI) in electrolyte. The structures, thermal stabilities and ionic conductivities of the as-prepared polymer electrolytes were investigated by fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and alternating current (AC) impedance. It shows that the polymer electrolyte PM-1M-Z4 can achieve an ionic conductivity of 2.53 × 10^-3S/cm at room temperature. Cyclic voltammogram indicates that the electrochemical stability window is from 2.3-4.0V. The polymer electrolytes have good thermal and mechanical stability. In addition, small molecules of electrolytes were perfectly enclosed by polymer chains, which can avoid leaking liquid. Therefore, it is benefit for the safety of lithium-ion batteries.

Original language	English
Pages (from-to)	1672-1674+1681
Journal	Gongneng Cailiao/Journal of Functional Materials
Volume	38
Issue number	10
Publication status	Published - Oct 2007

Keywords

Hyperbranched polyether
Ionic conductivity
PEU
Polymer electrolyte

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Cite this

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title = "PEU-based gel polymer electrolytes for lithium-ion batteries",

abstract = "Cross-linked gel polymer electrolytes based on PEU were prepared from the reaction of the hyper-branched polyether (PHEMO) with 4, 4'-diphenylmethane dissocyanate (MDI) in electrolyte. The structures, thermal stabilities and ionic conductivities of the as-prepared polymer electrolytes were investigated by fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and alternating current (AC) impedance. It shows that the polymer electrolyte PM-1M-Z4 can achieve an ionic conductivity of 2.53 × 10-3S/cm at room temperature. Cyclic voltammogram indicates that the electrochemical stability window is from 2.3-4.0V. The polymer electrolytes have good thermal and mechanical stability. In addition, small molecules of electrolytes were perfectly enclosed by polymer chains, which can avoid leaking liquid. Therefore, it is benefit for the safety of lithium-ion batteries.",

keywords = "Hyperbranched polyether, Ionic conductivity, PEU, Polymer electrolyte",

author = "Chuan Wu and Pan, {Chun Hua} and Feng Wu and Ying Bai and Lin Ye and Feng, {Zeng Guo}",

year = "2007",

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TY - JOUR

T1 - PEU-based gel polymer electrolytes for lithium-ion batteries

AU - Wu, Chuan

AU - Pan, Chun Hua

AU - Wu, Feng

AU - Bai, Ying

AU - Ye, Lin

AU - Feng, Zeng Guo

PY - 2007/10

Y1 - 2007/10

N2 - Cross-linked gel polymer electrolytes based on PEU were prepared from the reaction of the hyper-branched polyether (PHEMO) with 4, 4'-diphenylmethane dissocyanate (MDI) in electrolyte. The structures, thermal stabilities and ionic conductivities of the as-prepared polymer electrolytes were investigated by fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and alternating current (AC) impedance. It shows that the polymer electrolyte PM-1M-Z4 can achieve an ionic conductivity of 2.53 × 10-3S/cm at room temperature. Cyclic voltammogram indicates that the electrochemical stability window is from 2.3-4.0V. The polymer electrolytes have good thermal and mechanical stability. In addition, small molecules of electrolytes were perfectly enclosed by polymer chains, which can avoid leaking liquid. Therefore, it is benefit for the safety of lithium-ion batteries.

AB - Cross-linked gel polymer electrolytes based on PEU were prepared from the reaction of the hyper-branched polyether (PHEMO) with 4, 4'-diphenylmethane dissocyanate (MDI) in electrolyte. The structures, thermal stabilities and ionic conductivities of the as-prepared polymer electrolytes were investigated by fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and alternating current (AC) impedance. It shows that the polymer electrolyte PM-1M-Z4 can achieve an ionic conductivity of 2.53 × 10-3S/cm at room temperature. Cyclic voltammogram indicates that the electrochemical stability window is from 2.3-4.0V. The polymer electrolytes have good thermal and mechanical stability. In addition, small molecules of electrolytes were perfectly enclosed by polymer chains, which can avoid leaking liquid. Therefore, it is benefit for the safety of lithium-ion batteries.

KW - Hyperbranched polyether

KW - Ionic conductivity

KW - PEU

KW - Polymer electrolyte

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M3 - Article

AN - SCOPUS:36249006986

SN - 1001-9731

VL - 38

SP - 1672-1674+1681

JO - Gongneng Cailiao/Journal of Functional Materials

JF - Gongneng Cailiao/Journal of Functional Materials

IS - 10

ER -

PEU-based gel polymer electrolytes for lithium-ion batteries

Abstract

Keywords

UN SDGs

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