abstract |
Battery separator, comprising cellulosic fibers of the lyocell fabric, in which the R10 value, the R18 value, which are determined according to DIN 54355, and the hemicellulose content of the lyocell fibers are as follows: R10> 83 % by weight, preferably> 84% by weight R18> 93% by weight, preferably> 94% by weight hemicellulose content <3% by weight. |