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Issue 2, 2013
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Composite of a nonwoven fabric with poly(vinylidene fluoride) as a gel membrane of high safety for lithium ion battery

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Abstract

A composite membrane of a nonwoven fabric with poly(vinylidene fluoride) exhibiting high safety (self-extinguishing), good mechanical property and low cost is reported. The ionic conductivity of the as-prepared gel membrane saturated with 1 mol l−1 LiPF6 electrolyte at ambient temperature can be up to 0.30 mS cm−1, higher than that of the corresponding well-used commercial separator (Celgard 2730), 0.21 mS cm−1. Moreover, the lithium ion transference in the gel membrane at room temperature is almost twice that in the commercial separator. Furthermore, the absorbed solvent is difficult to evaporate at elevated temperature. Its electrochemical performance is evaluated by using a LiFePO4 cathode. The obtained results suggest that this gel-type composite membrane is very attractive for large-capacity battery systems requiring high safety and low cost.

Graphical abstract: Composite of a nonwoven fabric with poly(vinylidene fluoride) as a gel membrane of high safety for lithium ion battery

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Publication details

The article was received on 20 Sep 2012, accepted on 23 Nov 2012 and first published on 26 Nov 2012


Article type: Paper
DOI: 10.1039/C2EE23564A
Citation: Energy Environ. Sci., 2013,6, 618-624
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    Composite of a nonwoven fabric with poly(vinylidene fluoride) as a gel membrane of high safety for lithium ion battery

    Y. Zhu, F. Wang, L. Liu, S. Xiao, Z. Chang and Y. Wu, Energy Environ. Sci., 2013, 6, 618
    DOI: 10.1039/C2EE23564A

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