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Issue 22, 2017
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An interpenetrating network poly(diethylene glycol carbonate)-based polymer electrolyte for solid state lithium batteries

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Abstract

Polycarbonate-based polymer electrolytes possess superior ionic conductivity at room temperature, higher lithium ion transference number and wider electrochemical stability window when compared with conventional poly(ethylene oxide)-based polymer electrolytes. Herein, the poly(diethylene glycol carbonate) dimethacrylate macromonomer (PDEC-DMA) was synthesized and the resultant interpenetrating network IPN-PDEC polymer electrolyte was developed via free radical in situ polymerization for polymer electrolyte Li metal batteries. This IPN-PDEC polymer electrolyte exhibited a decent ionic conductivity of 1.64 × 10−4 S cm−1 at room temperature and a wide electrochemical stability window (up to 4.5 V vs. Li+/Li). The LiFePO4/IPN-PDEC/Li and LiFe0.2Mn0.8PO4/IPN-PDEC/Li cells delivered excellent rate capability and cycling performance at room temperature. An all solid state lithium battery was also demonstrated by applying the as-prepared solid polymer electrolyte (SPE-PDEC) at a temperature of 100 °C, which displayed a superior cycling performance. Therefore, the IPN-PDEC network is a promising polymer electrolyte for solid state lithium batteries.

Graphical abstract: An interpenetrating network poly(diethylene glycol carbonate)-based polymer electrolyte for solid state lithium batteries

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Publication details

The article was received on 20 Mar 2017, accepted on 10 May 2017 and first published on 11 May 2017


Article type: Paper
DOI: 10.1039/C7TA02423A
Citation: J. Mater. Chem. A, 2017,5, 11124-11130
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    An interpenetrating network poly(diethylene glycol carbonate)-based polymer electrolyte for solid state lithium batteries

    X. Liu, G. Ding, X. Zhou, S. Li, W. He, J. Chai, C. Pang, Z. Liu and G. Cui, J. Mater. Chem. A, 2017, 5, 11124
    DOI: 10.1039/C7TA02423A

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