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US 5,618,318 AGranted
Method for forming a folded electrode configuration for galvanic cells
AssigneePower Conversion, Inc.
InventorsThomas B. Reddy, Pedro Rodriquez
Life of this patent
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Abstract
A high density cell stack is provided utilizing strips of flexible cathode material and flexible anode materials folded over each other at right angles. A suitable anode material is lithium and a suitable cathode material is manganese dioxide. The disclosed cell stacks are rapidly manufactured to provide high density cells with good mechanical stability and good stability against shorting.
Claims8
The method of fabricating a electrochemical cell stack comprising:
- A) providing a strip of cathode material having flexibility sufficient to permit folding over of said strip onto itself;
- B) providing a strip of flexible anode material having flexibility sufficient to permit folding over of said onto itself and comprising a lithium foil constructed and arranged with a metal current collector extending along the length of said foil;
- C) providing a flexible, non-conductive separator material between said anode and cathode strips of A and B to prevent electrical contact between said strip and being in contact with an electrolyte;
- and
- D) folding said anode and cathode strips at right angles to provide a cell stack having at least 3 layers of said anodes and cathodes folded over onto each other at right angles.
2 more elements
Dependencies are inferred from the claim text.