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US 6,617,072 B2Granted
Positive active electrode composition with graphite additive
AssigneeOvonic Battery Company, Inc.
InventorsSrinivasan Venkatesan, Binay Prasad, Kenneth Laming, Boyko Aladjov
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Abstract
An active composition for an electrode of an electrochemical device. The active composition comprises an active electrode material, a carbon material, and a binder where the binder comprises an elastomeric polymer. Preferably, the active electrode material is nickel hydroxide, the carbon material is graphite and the elastomeric polymer is styrene-butadiene.
Claims9
A battery cell, comprising:
- at least one negative electrode comprising a hydrogen storage alloy active material;
- at least one positive electrode comprising an active composition comprising a nickel hydroxide material, a carbon material and an elastomeric polymer;
- and
- an electrolyte,
- wherein said battery cell has a cycle life of at least 1000 cycles at 80 percent depth of discharge.
2 more elements
Dependencies are inferred from the claim text.