ELECTROLYTIC CAPACITORS COMPRISING MEANS IN THE FORM OF A ULTILAYER POLYMERIC SHEET FOR THE SORPTION OF HARMFUL SUBSTANCES

摘要

Electrolytic capacitors are described, comprising an airtight housing, electrodes immersed in an electrolytic solution, electrical contacts connected to the electrodes and a means for the sorption of harmful substances made of a multilayer polymeric sheet (10), which is formed of an inner layer (12) of polymeric material containing particles of one or more getter materials (11) for the sorption of the harmful substances, and at least one protective layer (13) of a polymeric material impermeable to the electrolyte, wherein all the polymeric materials are permeable to the harmful substances. A method for the removal of harmful substances from electrolytic capacitors is also described.