Carbon electrode
AssigneeW. R. Grace & Co.-Conn.
InventorMenahem Anderman
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Abstract
An improved carbon cathode and its use in a Li/SO.sub.2 battery wherein the cathode is formed from a microporous sheet having a substantially uniform mixture of from 7 to 22 volume percent of an ultra-high molecular weight polyethylene, from 78 to 93 volume percent of a conductive carbon black and from 0 to 2 volume percent of a plasticizer for the polyethylene. The microporous sheet has a void volume of at least 75 percent and exhibits electrical conductivity of at least 0.05 ohm.sup.-1 cm.sup.-1.
Claims26
A carbon electrode suitable for use in a Li/SO.sub.2 battery comprising at least one substantially homogeneous, microporous sheet having a composition of from about 7 to 22 volume percent of high density polyethylene having a weight average molecular weight of at least about 3,000,000, from 78 to 93 volume percent of a high surface area, conductive carbon having a surface area of from 30 to 500 m.sup.2 /gm, a mean particle size of from 10 to 100 millimicrons and conductivity of at least 20 ohm.sup.-1 cm.sup.-1 and from 0 to 2 volume percent of a plasticizer for said polyethylene;
- and a current collector composed of a conductive material, said current collector being in intimate contact with each of said at least one sheet.
Dependencies are inferred from the claim text.