Polymer gel electrolytes based on oligomeric polyether/cross-linked PMMA blends prepared via in situ polymerization |
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| Institution: | 1. Department of Physics, Ramakrishna Mission Vivekananda College, Chennai, 600004, India;2. Physics Department, Institute of Science, Banaras Hindu University, Varanasi 221005, India;1. Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, NSW 2007, Australia;2. CIC Energigune, Parque Tecnológico de Álava, Miñano 01510 Spain;1. State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science& Engineering, Zhejiang University, Hangzhou 310027, China;2. Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China;3. Zhejiang Provincial Key Laboratory for Cutting Tools, Taizhou University, Taizhou 318000, China |
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| Abstract: | Very-low-vapor-pressure oligomeric polyether electrolytes blended with and dimensionally stabilized by cross-linked poly(methyl methacrylate) (PMMA) are prepared via in situ polymerization. The synthesized polymer gel electrolytes (PGEs) are freestanding films with excellent dimensional stability, mechanical integrity and strength. They exhibit high ionic conductivity at room temperature reaching 4.3 × 10−4 S/cm for the highest conducting sample and exceptional thermal stability. The oligomeric polyether and PMMA appear to have molecular level interaction in the blends and the PGEs remain a single phase from at least −50 to 200 °C, potentially enabling their application in advanced batteries in wide temperature ranges. The novel in situ polymerization process allows precise control of the composition of the PGEs and can enable in situ fabrication of advanced cells. |
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