US 2002/0172868 A1Published application

Cathode with performance enhancing additive

OwnerMichael Manna, Edward Cuellarinventors

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Abstract

Performance of electrochemical cells is improved and construction is facilitated with the addition of from about 0.25% to 3% by weight of silica (fumed or non-fumed) and the like, particularly fumed silica, to the cathodes of the cells and particularly to cathodes comprised of lithiated metal oxide.

Claims10

Dependent claims

An electrochemical cell comprising an anode, a cathode and an electrolyte wherein said cathode comprises an active depolarizer material admixed with an additive comprised of a member of the group consisting of alumina, fumed silica, non-fumed silica, chemically treated silica and mixtures thereof.

Dependencies are inferred from the claim text.

Facts

Application: 10/099,288Filed 14 Mar 2002
Priority: 14 Mar 2001
Published: 21 Nov 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 10/4235
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells: safety or regulating additives or arrangements in…
H01M 4/1391
Processes of manufacture: of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/62
Electrodes composed of, or comprising, active material: selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 4/1393
Processes of manufacture: of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx

Family

Application60/275,812Us provisional application · filed 14 Mar 2001
US 2002/0172868 A1This patent

From the US filing history. Foreign family members aren’t listed.

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