Poly(vinylidene fluoride)–polydiphenylamine composite electrospun membrane as high-performance polymer electrolyte for lithium batteries
作者： Anantha Iyengar Gopalan , Kwang-Pill Lee , Kalayil Manian Manesh , Padmanabhan Santhosh
DOI: 10.1016/J.MEMSCI.2008.03.007
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摘要: Abstract Composites of poly(vinylidene fluoride) (PVdF)–polydiphenylamine (PDPA) are electrospun as nanofibrous membranes, PVdF–PDPA-CFM (CFM represents composite membrane). Polymer electrolytes prepared by loading lithium salts into PVdF–PDPA-CFM. Field emission scanning electron microscope (FESEM) images clearly inform that has interconnected multi-fibrous layers with ultrafine porous structures. The average diameter fibers in is ∼200 nm for a 0.5 wt.% PDPA the composite, which far lesser than pristine PVdF membrane. There inter-fiber twisting generates microcavities. These morphological features result higher ionic conductivity, effective ion transport and good interfacial characteristics electrode. Higher number about 0.48, liquid electrolyte uptake (>280%) dimensional stability, lower resistance electrochemical stability window 5.18 V vs. Li witnessed. With these improved performance characteristics, finds its suitability polymer high-performance rechargeable batteries.
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