| abstract |
The present invention relates to electrical separators and a method for their production. DOLLAR A An electrical separator is a separator that is used in batteries and other arrangements in which electrodes, e.g. B. must be separated from one another while maintaining ion conductivity. The separator is preferably a thin, porous, insulating material with high ion permeability, good mechanical strength and long-term stability against those in the system, e.g. B. in the electrolyte of the battery, chemicals and solvents used. It is intended to completely electrically insulate the cathode from the anode in batteries. He must also be permanently elastic and the movements in the system, for. B. in the electrode package when loading and unloading, follow. DOLLAR A This object is achieved by an electrical separator according to the invention, comprising a planar, flexible substrate provided with a multiplicity of openings with a coating located on and in this substrate, the substrate being a polymeric nonwoven and the coating being a porous, electrically insulating , ceramic coating, and wherein the separator is characterized in that it has a thickness of less than 80 μm. |