Patent ID: 6821672
Filing Date: 2004-11-23
Classification: H01M,Y02E,Y10T

Abstract:
In a storage battery comprising a plurality of lead plates in a closed case, a fibrous sheet plate separator between adjacent ones of said plates, and a body of a sulfuric acid electrolyte absorbed by each of said separators and maintained in contact with each of the adjacent ones of said plates, the improvement wherein said separator sheets consist essentially of intermeshed glass fibers, intermeshed organic fibers, or intermeshed glass and organic fibers produced by opening bundles of the fibers, suspending the carded fibers in a gaseous medium, carding the suspended fibers and collecting the carded fibers on a foraminous material, with the proviso that the mass of fibers has a BET surface area of from 0.2 to 5 m2 per gram.