Method of preparing a battery separator

Details Method of preparing a battery separator Method of preparing a battery separator

1996-02-09

1998-03-17

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

264 63, 26421111, C04B 35185, C04B 3510, C04B 3806

Patent

active

057283311

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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