Chemistry: electrical current producing apparatus – product – and – Plural concentric or single coiled electrode
Patent
1997-10-14
1999-08-17
Maples, John S.
Chemistry: electrical current producing apparatus, product, and
Plural concentric or single coiled electrode
429144, 429206, 429254, H01M 214
Patent
active
059392223
ABSTRACT:
A spirally wound storage cell having an alkaline electrolyte, the storage cell being in particular of the nickel-cadmium type or of the nickel metal hydride type, and including at least one positive electrode and at least one negative electrode on either side of a non-woven separator made up of fibers made exclusively of polypropylene, said storage cell being characterized by the fact that said separator (5) comprises first and second superposed layers, said first layer (6) being obtained by the "spun-bond" method and serving as a support, and said second layer (7) being obtained by needling fibers on said first layer, the needling tangling the fibers of the second layer together, and bonding them to the fibers of the first layer.
REFERENCES:
patent: 3186876 (1965-06-01), Piechon
patent: 3330702 (1967-07-01), Horowitz
patent: 5176968 (1993-01-01), Blasi et al.
patent: 5492781 (1996-02-01), Degen et al.
Patent Abstracts of Japan, vol. 010, No. 005 (E-372) Jan. 10, 1986 corresponding to JP 60 170159 A (Matsushita Denki Sangyo KK) Sep. 3, 1985.
Senyarich Stephane
Viaud Patrick
Alcatel Alsthom Compagnie Generale d'Electricite
Maples John S.
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