This article reports on a study which was carried out to compare different fibers properties and their influence
on the battery separators performance. Amongst cellulosic fibers, Lenzing’s Tencel® has a unique
“fibrillation ability” and utilising the long and submicron “fibrils” it is possible to manufacture separators
with small and uniform pores. In addition, the fibrils “interlace” together and create a 3D structure that
ensures high dimensional stability.
Work to improve Tencel®’s properties is also described which has optimized the fiber for alkaline battery
separators.