Secondary electrochemical cell comprising 1.1 a negative electrode containing 1.1.1 as output conductor a metallic or metal-coated open-pore foam or a metallic or metal-coated nonwoven, 1.1.2 as carbon-based storage material which enables the storage of electrical charge in the electrode through formation of an electrical double layer (Helmholtz double layer), activated carbon having a BET surface area of at least 800 m 2 /g, and 1.1.3 a non-carbon-based H2 storage material which can chemisorb hydrogen and/or store it in the form of a metal hydride, 1.2 a positive electrode containing 1.2.1 as output conductor a metallic or metal-coated open-pore foam or a metallic or metal-coated nonwoven and 1.2.2 nickel hydroxide and/or nickel oxyhydroxide, 1.3 a porous separator which separates the negative electrode and the positive electrode from one another, and 1.4 an aqueous alkaline electrolyte with which the electrodes and the separator are soaked and 1.5 a housing that encases the electrodes, the separator and the electrolyte, characterized in that 1.6 the negative electrode contains the carbon-based storage material in a proportion between 5% by weight and 15% by weight and 1.7 the carbon-based storage material and/or the H2 storage material are distributed homogeneously in the negative electrode. 1.1 a negative electrode containing 1.1.1 as output conductor a metallic or metal-coated open-pore foam or a metallic or metal-coated nonwoven, 1.1.2 as carbon-based storage material which enables the storage of electrical charge in the electrode through formation of an electrical double layer (Helmholtz double layer), activated carbon having a BET surface area of at least 800 m 2 /g, and 1.1.3 a non-carbon-based H2 storage material which can chemisorb hydrogen and/or store it in the form of a metal hydride, 1.1.1 as output conductor a metallic or metal-coated open-pore foam or a metallic or metal-coated nonwoven, 1.1.2 as carbon-based storage material which enables the storage of electrical charge in the electrode through formation of an electrical double layer (Helmholtz double layer), activated carbon having a BET surface area of at least 800 m 2 /g, and 1.1.3 a non-carbon-based H2 storage material which can chemisorb hydrogen and/or store it in the form of a metal hydride, 1.2 a positive electrode containing 1.2.1 as output conductor a metallic or metal-coated open-pore foam or a metallic or metal-coated nonwoven and 1.2.2 nickel hydroxide and/or nickel oxyhydroxide, 1.2.1 as output conductor a metallic or metal-coated open-pore foam or a metallic or metal-coated nonwoven and 1.2.2 nickel hydroxide and/or nickel oxyhydroxide, 1.3 a porous separator which separates the negative electrode and the positive electrode from one another, and 1.4 an aqueous alkaline electrolyte with which the electrodes and the separator are soaked and 1.5 a housing that encases the electrodes, the separator and the electrolyte, characterized in that 1.6 the negative electrode contains the carbon-based storage material in a proportion between 5% by weight and 15% by weight and 1.7 the carbon-based storage material and/or the H2 storage material are distributed homogeneously in the negative electrode.