Electrolytic capacitors comprising means in the form of a...

H - Electricity – 01 – G

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H01G 9/08 (2006.01) C01B 3/00 (2006.01) H01G 9/155 (2006.01) H01M 2/04 (2006.01)

Patent

CA 2622970

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.

L'invention concerne des condensateurs électrolytiques comprenant un boîtier étanche à l'air, des électrodes immergées dans une solution électrolytique, des contacts électriques reliés aux électrodes et des moyens destinés à la sorption de substances nuisibles, fabriqués dans une feuille polymère multicouche (10), ladite feuille étant formée d'une couche interne (12) de matériau polymère contenant des particules d'au moins un matériau getter (11) destiné à la sorption des substances nuisibles, et d'au moins une couche de protection (13) dans un matériau polymère imperméable à l'électrolyte, tous les matériaux polymères étant perméables aux substances nuisibles. L'invention se rapporte également à un procédé qui permet d'éliminer les substances nuisibles des condensateurs électrolytiques précités.

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