Abstract
A polymer electrolyte based on the blending of poly(vinylidene fluoride-hexafluoropylene) (PVDF-HFP) and hydroxypropyl methyl cellulose (HPMC) was prepared for the first time. The structure and performance of the gel polymer electrolyte were characterized and measured by X-ray diffraction, Fourier transform infrared, thermogravimetric analysis, scanning electron microscopy, electrochemical impedance spectroscopy, linear sweep voltammetry, and by a charge/discharge test. The results show that the gel polymer electrolyte has the best performance when PVDF-HFP/HPMC ratio (w/w) is 4:1. At room temperature, the ionic conductivity can reach 0.38 × 10−3 S cm−1, the electrochemical stable window is up to 5.0 V (vs. Li/Li+), and the half cell of Li/GPE/LiMn2O4 shows high-discharge-specific capacity and good cycling performance.
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Acknowledgments
The work was financially supported by the Fundamental Research Funds for the Central Universities (721500452), the Major Special Programs of Science and Technology of Hunan Province (2011FJ1005), and Innovative Project of Graduate in Hunan Province (1960-71131110033), which are greatly appreciated.
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Ran, Y., Yin, Z., Ding, Z. et al. A polymer electrolyte based on poly(vinylidene fluoride-hexafluoropylene)/hydroxypropyl methyl cellulose blending for lithium-ion battery. Ionics 19, 757–762 (2013). https://doi.org/10.1007/s11581-012-0808-7
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DOI: https://doi.org/10.1007/s11581-012-0808-7