Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer – spacer or materials for use therewith
Patent
1983-04-20
1984-08-14
Niebling, John F.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer, spacer or materials for use therewith
429204, H01M 1006
Patent
active
044657480
ABSTRACT:
A separator suitable for electrochemical cells of the lead-acid recombinant type comprises a sheet of entangled glass fibres. It has been found that significant improvements in performance can be obtained when 5 to 35% by weight of the fibres have a diameter of less than 1 .mu.m. It has also been found surprisingly advantageous if the overall solubility of the glass fibres is greater than 3% and preferably at least 4%, by weight in 5 hours at 85.degree. C. in sulphuric acid of specific gravity 1.200. It has been found that further benefits can accrue if all or a major proportion of the fibres cover a continuous range of fibre diameters and fibre lengths, and preferably a minor proportion of the fibres being over 5 mm in length.
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Evans Adlard & Company Limited
Niebling John F.
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