RECHARGEABLE LITHIUM BATTERIES COMPRISING MEANS FOR THE SORPTION OF HARMFUL SUBSTANCES IN THE FORM OF A MULTILAYER POLYMERIC SHEET

摘要

Rechargeable lithium batteries are described comprising an airtight conta iner, electrodes immersed in an electrolytic solution and spaced apart by me ans of one or more separators, electrical contacts connected to the electrod es and a means for sorbing harmful substances formed of a multilayer polymer ic sheet (10) comprised of an inner layer (12) of a polymeric material conta ining particles (11) of one or more getter materials for the sorption of the harmful substances, and at least one external protective layer (13) of a po lymeric material impermeable to the electrolyte, wherein all the polymeric m aterials are permeable to the harmful substances.