Chemistry: electrical current producing apparatus – product – and – Having means to accommodate electrode expansion
Patent
1996-04-26
1998-02-10
Gorgos, Kathryn L.
Chemistry: electrical current producing apparatus, product, and
Having means to accommodate electrode expansion
429162, 429164, 429181, 429211, 429233, 429241, 296231, H01M 400, H01M 612, H01M 202, H01M 402
Patent
active
057167290
ABSTRACT:
An electrochemical cell has a cathode material formed into a pellet shape which expands as the cell is discharged. A cathode current collector circumferentially surrounds the cathode pellet and is in contact with the peripheral edge of the cathode pellet to prevent peripheral cathode expansion. The peripheral cathode current collector maintains a stable cell impedance during cell discharge.
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Haas David P.
Merritt Donald R.
Rorvick Anthony W.
Schmidt Craig L.
Sunderland Walter C.
Gorgos Kathryn L.
Medtronic Inc.
Patton Harold R.
Wong Edna
Woods Thomas F.
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