negative side the depiction according to fig2 shows discharging 26 of the galvanic element 10 with the li ions migrating in opposition to the migrational direction 20 depicted in fig1 from the negative electrode 14 to the positive electrode 12 this migration being identified by reference symbol 24 the construction of the galvanic element 10 according to the depiction in fig2 is analogous to the construction of the galvanic element 10 according to the depiction in fig1 with fig2 showing discharging 26 discharging 26 is likewise based on the reaction equation above which however proceeds in the opposite direction the depiction according to fig1 and 2 serves for depicting the reversible insertion and removal i e the intercalation and deintercalation of the li ions fig3 shows a cross section through a separator 1 of the disclosure with a first component 2 in the form of a random woven fiber fabric 3 component 2 comprises a high melting polymer as for example polyester polyimide aramid or polyethersulfone in the exemplary embodiment depicted in fig3 the random woven fiber fabric 3 made from high melting polymer is present in a thickness range from 4 to 50 u03bcm preferably in a range from 15 to 30 u03bcm the random woven fiber fabric 3 therefore combines the qualities of a low thickness with a high mechanical stability and so a separator 1 of this kind as well can also be subjected to a bending and shearing stress located between the individual fibers of the random woven fiber fabric 3 is a second component 4 which is a polyolefin based polymer.