Abstract: The invention relates to a method for producing a battery cell (10), in particular a solid-state battery cell, wherein material particles (1) are provided with a first coating (3), wherein in a deposition step the material particles (1) having the first coating (3) are accelerated toward a substrate (112) in such a way that the first coating (3) of the material particles (1) joins with the first coating (3) of further material particles (1) upon hitting the substrate (112) such that a first layer (30) is formed, in particular without an input of heat from outside.

Abstract: A separator for separating an anode and a cathode in a battery cell. The separator includes a base material which has a porosity and which may be ionically conductive. An electrolyte layer which is formed by a solid electrolyte and which has a lower porosity than the base material of the separator is provided within the base material of the separator. Moreover, a battery cell that includes at least one separator is described.