Ts. Chung et al., DEVELOPMENT OF POLYETHYLENE TETRAFLUOROETHYLENE MICROPOROUS FILM FOR ADVANCED BATTERIES, Journal of materials science. Materials in electronics, 4(4), 1993, pp. 259-266
Lithium batteries have been recognized as advanced high-performance an
d high-power sources because they provide light weight, high energy de
nsity and high voltage. The quality of these type of batteries is dete
rmined by the efficiency of electron transfer in an electrolyte as wel
l as the microporous structure of the membrane separator. In this repo
rt, we describe the development of a superior ETFE (polyethylene tetra
fluoroethylene) microporous polymeric membrane suitable for use as the
separator for lithium/Cu (II) rechargeable batteries and lithium/thio
nyl chloride primary batteries. The requirements for a microporous mem
brane to be employed in these lithium batteries are discussed. We repo
rt the membrane fabrication and membrane performance in both primary a
nd secondary batteries.