Glass fiber separators and batteries including such separators

H - Electricity – 01 – M

Patent

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H01M 2/16 (2006.01)

Patent

CA 2302419

A lead acid battery (10) having a glass fiber separator (18) is disclosed. The separator material is a mass of intermeshed glass or other fibers produced by suspending the fibers in a gaseous medium, and collecting the suspended fibers on a foraminous material. The mass of the fibers suspended in the gaseous medium has a BET surface area of from 0.2 to 5.0 square meters per gram. A battery having a glass fiber separator material with added cellulose fibrils is also disclosed, as is a battery having a glass fiber separator with added particulate material such as silica.

L'invention concerne une batterie au plomb (10), comprenant un séparateur en fibres de verre (18). Ce séparateur est fabriqué dans un matériau constitué d'une masse de fibres de verre ou d'autres fibres entremêlées. On peut fabriquer ces fibres en les mettant en suspension dans un milieu gazeux, puis en recueillant ces fibres mises en suspension sur un matériau foraminé. Cette masse de fibres mises en suspension dans un milieu gazeux présente une aire de surface BET variant entre 0,2 et 5,0 mètres carrés par gramme. L'invention concerne également une batterie comprenant un séparateur en fibres de verre renfermant des fibrilles cellulosiques ajoutées, ainsi qu'une batterie comprenant un séparateur en fibres de verre renfermant une substance particulaire ajoutée, par exemple de la silice.

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