Journal
JOURNAL OF POWER SOURCES
Volume 146, Issue 1-2, Pages 431-435Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2005.03.047
Keywords
coated separator; poly(vinyl acetate); poly(vinylidene fluoride); polyethylene non-woven matrix; phase inversion; rechargeable lithium battery
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The coated separator was prepared by coating poly(vinyl acetate) (PVAc) on the surface of the novel separator based on poly(vinylidene fluoride) (PVdF) and polyethylene (PE) non-woven matrix. The ionic conductivity of the coated separator was 1.1 x 10(-3) S cm(-1) at 25 degrees C,a little higher than that of bare separator. The coated separator showed smoother surface morphology and better adhesion property toward electrodes, and thereby it resulted in lower total resistance than the bare separator. The discharge capacity of the unit cell with coated separator at C/2 rate was maintained at about 84% of the theorctical capacity, which is quite higher than that of the unit cell with the bare separator. (c) 2005 Elsevier B.V. All rights reserved.
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