TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The anode comprises anodes made from carbon, anodes comprising tin or silicon or anodes comprising lithium titanate compound of formula (Li4+xTi5O12).x = greater than 0 to 3.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The crosslinked polyvinylpyrrolidone present in the layer in the form of particles has a mean particle size of 0.1-5 mu m. The particles of crosslinked polyvinylpyrrolidone present in the layer have an irregular shape. The binder present in the layer is polymers comprising polyvinyl alcohol, water-soluble polyvinylpyrrolidone, styrene-butadiene rubber, polyacrylonitrile, carboxymethylcellulose or fluorinated (co)polymers. The layer further comprises a base structure composed of nonwoven fabric. The base structure consists of fibers and has first pores formed by the fibers, where the base structure is filled at least partly with particles of crosslinked polyvinylpyrrolidone and the particles of crosslinked polyvinylpyrrolidone at least partly filling the first pores and forming regions filled with particles of crosslinked polyvinylpyrrolidone, the particles of crosslinked polyvinylpyrrolidone forming second pores in the filled regions, and the mean diameter of the particles of crosslinked polyvinylpyrrolidone is greater than the mean pore size of the majority of second pores. The particles of crosslinked polyvinylpyrrolidone present in layer are distributed homogeneously over the full area of the base structure. At least a portion of the filled regions is in the form of a coating of the base structure with the particles of crosslinked polyvinylpyrrolidone. The base structure comprises a nonwoven fabric, which are produced from at least one organic polymer comprising polybutylene terephthalate, polyethylene terephthalate, polyacrylonitrile, polyvinylidene fluoride, polyetheretherketone, polyethylene naphthalate, polysulfone, polyimide, polyester, polypropylene, polyoxymethylene, polyamide or polyvinylpyrrolidone. The layer has a mean thickness of 9-50 mu m.