MgAl2SiO6-incorporated poly(ethylene oxide)-based electrolytes for all-solid-state lithium batteries |
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Authors: | N. Angulakshmi Dong Jin Yoo Kee Suk Nahm C. Gerbaldi A. Manuel Stephan |
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Affiliation: | 1. R&D Education Centre for Specialized Graduate School of Hydrogen and Fuel Cells Engineering, Chonbuk National University, Jeonju, Jellabuk-do, 561-756, Republic of Korea 2. Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Chonbuk National University, Chonju, 561-756, Republic of Korea 3. Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy 4. Electrochemical Power Source Division, Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi, 630 006, India
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Abstract: | Poly(ethylene oxide) (PEO)-based composite polymer electrolytes (CPEs), comprising various concentrations of lithium hexafluorophosphate and magnesium aluminium silicate, were prepared by hot-press technique. The membranes were characterised by scanning electron microscopy, tensile and thermal analyses. It has been demonstrated that the incorporation of the ceramic filler in the polymeric matrix has significantly enhanced the ionic conductivity, thermal stability and mechanical integrity of the membrane. It also improved the interfacial properties with lithium electrode. Finally, an all-solid-state lithium cell composed of Li/CPE/LiFePO4 has been assembled and its cycling performance was analysed at 70 °C. The cell delivered a discharge capacity of 115 mAh g?1 at 1 °C rate and is found to be higher than previous reports. |
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