Journal
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
Volume 131, Issue 1-3, Pages 100-105Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.mseb.2006.03.035
Keywords
separator; PVDF; rechargeable lithium metal cells; electrospinning
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An electrospinning method was used to prepare electrospun PVDF-based membranes (EPMs) for battery separators applications. The morphology of the EPMs was investigated by scanning electron microscopy (SEM). The relations between applied voltage and average fiber diameter (AFD) under certain electrospinning conditions were discussed. The thermal properties and crystal structure of the EPMs also were investigated by differential scanning calorimetry (DSC), and wide-angle X-ray diffraction (WAXD). Due to soften PVDF fibers in high temperature, the thermal treated EPMs can form an interconnected web structure, which greatly improves physical properties. Compared with Ceigard (TM) 2400 (PP separator), the cell with EPM shows better cycling ability of CV and charge-discharge performance with little capacity loss after 50 cycles at C/2 rate. (c) 2006 Elsevier B.V. All rights reserved.
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