Preparation and properties of gel membrane containing
porous PVDF-HFP matrix and cross-linked PEG for lithium ion conduction

doi:10.1007/s11705-008-0011-6

2008, Vol. 2

Issue (1) : 89-94 https://doi.org/10.1007/s11705-008-0011-6

Preparation and properties of gel membrane containing porous PVDF-HFP matrix and cross-linked PEG for lithium ion conduction

ZHANG Mei¹, CUI Zhenyu¹, ZHU Baoku¹, HAN Gaige¹, XU Youyi¹, ZHANG Aiqing²

1.Institute of Polymer Science, Zhejiang University; 2.College of Chemistry and Materials Science, South-Central University for Nationalities;

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Abstract Lithium ion conducting membranes are the key materials for lithium batteries. The lithium ion conducting gel polymer electrolyte membrane (Li-GPEM) based on porous poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) matrix and cross-linked PEG network is prepared by a typical phase inversion process. By immersing the porous PVDF-HFP membrane in liquid electrolyte containing poly(ethylene glycol) diacrylate (PEGDA) and an initiator to absorb the liquid electrolyte at 25°C, and then thermally cross-linking at 60°C, the Li-GPEM is fabricated successfully. The measurements on its weight loss, mechanical and electrochemical properties reveal that the obtained Li-GPEM has better overall performance than the liquid and blend gel systems used as conductive media in lithium batteries. The ionic conductivity of the fabricated Li-GPEM can reach as high as 2.25 × 10^-3 S/cm at 25°C.

Issue Date: 05 March 2008

Cite this article:

ZHANG Aiqing,ZHANG Mei,HAN Gaige, et al. Preparation and properties of gel membrane containing porous PVDF-HFP matrix and cross-linked PEG for lithium ion conduction[J]. Front. Chem. Sci. Eng., 2008, 2(1): 89-94.

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-008-0011-6
https://academic.hep.com.cn/fcse/EN/Y2008/V2/I1/89

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