Article ID Journal Published Year Pages File Type
7019788 Journal of Membrane Science 2018 21 Pages PDF
Abstract
A gel polymer electrolyte based on polyacrylonitrile (PAN)/poly(vinyl alcohol) (PVA) blending membrane have been fabricated through non-solvent induced phase separation (NIPS) method followed by activation in liquid electrolyte of 1.0 M LiPF6 in carbonate solvent. The blending compatibility of PVA/PAN is investigated through thermodynamics analyses and demonstrates the miscibility of PAN/PVA blending system. The blending membranes with weight ratio of PVA/PAN= 10:90 and 20:80 have great effect on morphology of both top and bottom surface. This characteristic exhibits the high electrolyte uptake (up to 585%), acceptable thermal stability, excellent ionic conductivity and electrochemical stability (up to 5.28 V). The application of PAN/PVA blending membrane has been demonstrated by a coin cell using Li metal as counter electrode at 1C, resulting in better long-term cycle stability in comparison to cells with Celgard2320 separator and the highest capacity retention of 96%.
Related Topics
Physical Sciences and Engineering Chemical Engineering Filtration and Separation
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