期刊
MATERIALS FOR RENEWABLE AND SUSTAINABLE ENERGY
卷 7, 期 2, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s40243-018-0115-y
关键词
Poly(vinylidene fluoride); Poly(methyl methacrylate); Polymer electrolyte; Electrospinning; Nanofibers; Lithium ion batteries
资金
- Department of Science and Technology (DST, New Delhi, India) Support under DST-FIST Program [SR/FST/PSI-178/2012(C)]
Fabrication of nanofibrous polymer electrolyte membranes of poly(vinylidene fluoride) (PVdF) and poly(methyl methacrylate) (PMMA) in different proportion (PVdF:PMMA = 100:0, 80:20 and 50:50) by electrospinning is reported to investigate the influence of PMMA on lithium ion battery performance of PVdF membrane as separator. As-fabricated polymer electrospun nanofibrous membranes were characterized by SEM, FTIR, XRD, TGA and DSC for morphology, structure, crystallinity and thermal stability. PVdF-PMMA (50:50) polymer electrolyte membrane showed ionic conductivity 0.15 S/cm and electrolyte uptake 290% at room temperature. After 50 cycles, the discharge capacity 140 mAh/g of Li/PE/LiFePO4 cells with PVdF-PMMA (50:50) as polymer electrolyte (PE) membrane was found to be retained around 93.3%. The electrolyte uptake, ionic conductivity, and discharge capacity retention were improved by optimizing the proportion of PMMA in PVdF. Nanofibrous PVdF-PMMA (50:50) polymer electrolyte membrane was found to be a potential separator for lithium ion batteries.
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