A secondary battery comprising a power generating part and a charging part, wherein €ƒ€ƒ€ƒ the power generating part comprises an acidic medium in which a first electrode is disposed and a basic medium in which a second electrode is disposed; €...

Gaseous diffusion electrode, preferably cathode, and comprising a catalyst,used in a two-compartment electrolytic cell the compartments being separated by an ion exchange membrane, for the production of hydrogen peroside. The electrode comprises a catalyti...