Organic electrolyte electrochemical system including a polymeric separator
AssigneeAlcatel
InventorsXavier Andrieu, François Boudin, Ib Ingemann Olsen
Life of this patent
Estimating the term…
Abstract
A polymeric separator for an organic electrolyte electrochemical system comprises an elastomeric polymer, optionally, a polymer which swells in the organic electrolyte and with which the elastomeric polymer forms an alloy and, optionally, an inorganic compound. The polymeric separator has a microporous structure characterized by a porosity in the range 30% to 95% and pores with an average diameter in the range 0.1 μm to 5 μm
Claims7
An organic electrolyte electrochemical system including a polymeric separator comprising:
- a) an elastomeric polymer selected from the group consisting of an acrylonitrile-butadiene copolymer, a styrene-butadiene-styrene copolymer, a styrene-isoprene-styrene copolymer, polyesters and block amid polyethers;
- and
- b) a polymer which swells in an organic electrolyte selected from the group consisting of polyvinylidene fluoride and its copolymers, polymethylmethacrylate, polyvinylformal, polybutylmethacrylate and polyvinyl chloride, and with which said elastomeric polymer forms an alloy, said polymeric separator having a microporous structure with a porosity in the range 30% to 95% and pores with an average diameter in the range 0.1 μm to 5 μm.
An organic electrolyte electrochemical system including a polymeric separator consisting essentially of:
- a) an elastomeric polymer selected from the group consisting of an acrylonitrile-butadiene copolymer, a styrene-butadiene-styrene copolymer, a styrene-isoprene-styrene copolymer, polyesters and block amid polyethers;
- and
- b) a polymer which swells in an organic electrolyte selected from the group consisting of polyvinylidene fluoride and its copolymers, polymethylmethacrylate, polyvinylformal, polybutylmethacrylate and polyvinyl chloride, and with which said elastomeric polymer forms an alloy, said polymeric separator having a microporous structure with a porosity in the range 30% to 95% and pores with an average diameter in the range 0.1 μm to 5 μm.
Dependencies are inferred from the claim text.