Battery separator

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method

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429247, H01M 614

Patent

active

055144942

ABSTRACT:
A battery assembly comprising a separator, spaced metal/metal oxide electrodes and a liquid electrolyte, the improvement comprising a rigid, porous, ceramic separator that is wettable by the liquid electrolyte, that has a porosity of 40-90 volume %, an average pore size in the range of 0.1-25 microns, a thickness of 1-12 mm, and a weight loss of not more than about 5% when exposed to H.sub.2 SO.sub.4 having a specific gravity of 1.28 for 72 hours at 70.degree.C.

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