Abstract: The disclosure relates to a metal electrode or current collector for an energy storage device. The surface of the electrode or the current collector includes multiple blind hole-like recesses spaced apart from each other. The surface structured in this way is coated with a solid polymer electrolyte. The recesses are filled with the solid polymer electrolyte, as well as a primary or secondary energy storage device including the same.

Abstract: A method for producing at least one electrochemical cell of a solid-state battery, comprising a mixed-conducting anode, a mixed-conducting cathode, and an interposed electrolyte, is characterized in that a mixed-conducting anode and a mixed-conducting cathode are initially produced or provided. The surface of at least one of the two electrodes is modified by way of an additional method step in such a way that the electronic conductivity perpendicular to the cell is reduced to less than 10?8 S/cm in a layer of the electrode near the surface. The anode and cathode are then assembled to form a solid-state battery in such a way that the surface-modified layer of at least one electrode is disposed as an electrolyte layer between the anode and cathode, and the mixed-conducting electrodes are thereby electronically separated.

Abstract: A rechargeable energy storage device according to the invention is based on a metal-air battery, in which a gas electrode is used and an ion-conducting or proton-conducting membrane is used as the electrolyte. In contrast to the known metal-air batteries, the active component on the side of the electrolyte membrane opposite the gas electrode is present in the form of a liquid medium in the energy storage device according to the invention. The liquid-medium/gas battery according to the invention comprises a receptacle, which includes a medium in liquid form as the active material at the operating temperature of the battery.

Abstract: A method for producing at least one electrochemical cell of a solid-state battery, comprising a mixed-conducting anode, a mixed-conducting cathode, and an interposed electrolyte, is characterized in that a mixed-conducting anode and a mixed-conducting cathode are initially produced or provided. The surface of at least one of the two electrodes is modified by way of an additional method step in such a way that the electronic conductivity perpendicular to the cell is reduced to less than 10?8 S/cm in a layer of the electrode near the surface. The anode and cathode are then assembled to form a solid-state battery in such a way that the surface-modified layer of at least one electrode is disposed as an electrolyte layer between the anode and cathode, and the mixed-conducting electrodes are thereby electronically separated.

Abstract: A rechargeable energy storage device according to the invention is based on a metal-air battery, in which a gas electrode is used and an ion-conducting or proton-conducting membrane is used as the electrolyte. In contrast to the known metal-air batteries, the active component on the side of the electrolyte membrane opposite the gas electrode is present in the form of a liquid medium in the energy storage device according to the invention. The liquid-medium/gas battery according to the invention comprises a receptacle, which includes a medium in liquid form as the active material at the operating temperature of the battery.