A separator is a porous membrane placed between
electrodes of opposite polarity, permeable to ionic flow
but preventing electric contact of the electrodes. A
variety of separators have been used in batteries over
the years. Starting with cedar shingles and sausage
casing, separators have been manufactured from
cellulosic papers and cellophane to nonwoven fabrics,
foams, ion exchange membranes, and microporous
flat sheet membranes made from polymeric materials.
As batteries have become more sophisticated,
separator function has also become more demanding
and complex
A separator is a porous membrane placed betweenelectrodes of opposite polarity, permeable to ionic flowbut preventing electric contact of the electrodes. Avariety of separators have been used in batteries overthe years. Starting with cedar shingles and sausagecasing, separators have been manufactured fromcellulosic papers and cellophane to nonwoven fabrics,foams, ion exchange membranes, and microporousflat sheet membranes made from polymeric materials.As batteries have become more sophisticated,separator function has also become more demandingand complex
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