The invention relates to a method for producing a rechargeable high-energy battery with an anion-redox-active composite cathode containing lithium hydroxide as the electrochemically active component, which is mixed and contacted with electronically or mixed-conductive transition metals and/or transition metal oxides, so that an electronically or mixed-conductive network is formed, this mixture is applied to a current drain, and the composite cathode thus formed is placed in a cell housing together with a separator, a lithium-conductive electrolyte and a lithium-containing anode, so that an electrochemical cell is present and is subjected to at least one initial forming cycle.