Electrode for an electrochemical cell including stacked disks
AssigneeEveready Battery Company, Inc.
InventorLewis F. Urry
Life of this patent
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Abstract
An electrode is disclosed that includes a plurality of stacked disks. The electrode is preferably a negative electrode of an alkaline cell and the disks are preferably formed of zinc. By forming the negative electrode of such zinc disks, the discharge capacity of the negative electrode is increased. Consequently, the high-rate service of an alkaline cell having the inventive negative electrode is improved.
Claims24
An electrochemical cell comprising:
- a first electrode including a plurality of stacked disks;
- a second electrode disposed about the periphery of said disks;
- an electrolyte;
- a cylindrical cell housing;
- and
- a current collector extending along a longitudinal central axis of said cell housing,
- wherein said disks have a radius sufficient to extend between said second electrode and said current collector, and wherein said disks include a central aperture having a radius approximately equal to the radius of said current collector.
An electrochemical cell comprising a first electrode including a plurality of stacked disks, a second electrode disposed about the periphery of said disks, and an electrolyte, wherein said second electrode is a positive electrode including MnO.sub.2.
An electrochemical cell comprising a first electrode including a plurality of stacked disks, a second electrode disposed about the periphery of said disks, and an electrolyte, wherein said disks have a thickness between about 2 and 20 mils.
An electrochemical cell comprsing a first electrode including a plurality of stacked disks, a second electrode disposed about the periphery of said disks, and an electrolyte, wherein said disks have corrugated peripheral edges.
An electrochemical cell comprising a first electrode including a plurality of stacked disks, a second electrode disposed about the periphery of said disks, and an electrolyte, wherein said disks are made of a zinc compound.
An electrochemical cell comprising a first electrode including a plurality of stacked disks, a second electrode disposed about the periphery of said disks, an electrolyte, and a plurality of washers interposed between said disks.
An alkaline electrochemical cell comprising:
- a cylindrical cell housing;
- a positive electrode disposed within said housing and having a central cavity;
- a separator lining said central cavity;
- an electrolyte within said central cavity;
- a current collector extending along a longitudinal central axis of said cell housing;
- and
- a negative electrode including a plurality of stacked spaced-apart zinc disks having a radius sufficient to extend between said separator and said current collector and disposed perpendicular to the inner surface of said cavity.
Dependencies are inferred from the claim text.