Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Patent
1995-06-01
1997-01-21
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
429218, 429221, H01M 1040, H01M 496, H01M 436
Patent
active
055958397
ABSTRACT:
A novel and improved rechargeable, lithium-ion battery system is composed of a plurality of individual electrochemical cells having positive and negative electrodes disposed in opposite face-to-face arrangement with a porous separator containing electrolyte therebetween, and wherein the positive and negative electrodes of adjacent cells are disposed in contact respectively with opposite sides of a common current-collecting element forming a unitary bipolar structure. The negative electrode comprises a layer of carbon adhered to one side of the current-collecting element while the positive electrode comprises a layer containing a lithium transition metal oxide or sulfide compound adhered to the other opposite side of the element. The unitary bipolar structures containing the positive and negative electrodes of adjacent cells include outer peripheral, electrically-insulating seal members, preferably in the form of plastic insulating rings, which are joined together in a sealed stacked array.
REFERENCES:
patent: 4421834 (1983-12-01), Zupancic
patent: 4490446 (1984-12-01), Ramsay et al.
patent: 4925753 (1990-05-01), Schlaikjer
patent: 5254415 (1993-10-01), Williams et al.
patent: 5273842 (1993-12-01), Yamahira et al.
Doherty John R.
Kalafut Stephen
Lilley, Jr. Richard H.
Yardney Technical Products, Inc.
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