Wiederaufladbare elektrochemische Zelle

摘要

A rechargeable electrochemical cell comprising a first electrode capable of reversibly incorporating on the surface thereof an alkali metal, a second electrode capable of reversibly incorporating therein ions of the alkali metal, and an electrolyte in contact with the first and second electrodes, the cell being characterized in that prior to charging the surface of the first electrode is substantially free from the alkali-metal.