Alkaline cell or battery
AssigneeCarl Freudenberg KG
InventorsWolffried Wenneis, Harald Hoffmann, Birgit Severich, Hartwig Höcker, Helmut Keul
Life of this patent
Estimating the term…
Abstract
An alkaline cell or battery having at least one positive and one negative electrode which are separated by a separator and which are disposed, along with an alkaline electrolyte, in a housing, the separator being a non-woven fabric, a microporous foil, or a web made of one or a plurality of polymers, which are formed by copolymerization or grafting through reactive extrusion, and which have functional groups in the molecule or form them in the alkaline electrolyte, the functional groups being active as Lewis acids.
Claims12
An alkaline cell or battery comprising at least one positive and one negative electrode, which are separated by a separator and which are disposed, along with an alkaline electrolyte, in a housing, wherein the separator is a non-woven fabric or a microporous foil or a web,
- wherein the non-woven fabric or the microporous foil or the web comprises a copolymer which has not been functionalized through wet-chemical surface modification;
- wherein at least one component of the copolymer is selected from the group consisting of polystyrene, polyphenylene sulfide, polysulfone, or mixtures thereof;
- and
- wherein the separator binds at least 0.1 mmol NH3/g.
Dependencies are inferred from the claim text.