Room temperature lamination of Li-ion polymer electrodes
First Claim
1. A method of manufacturing an electrolytic cell comprising the steps of:
- placing a porous membrane between a first electrode and second electrode;
compressing the membrane between the electrodes at a room temperature thereby dry bonding the membrane to the electrodes.
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Accused Products
Abstract
According to an exemplary embodiment a polyvinylidene diflouride homopolymer and solvent, such as acetone, are mixed together to form a solution. The solution is coated on a porous electrode. The coated electrode is immersed in a bath, such as denatured Ethanol, thereby creating a porous membrane on the electrode. The membrane coated electrode is then dried. After drying membrane coated electrode is placed opposite another porous electrode with the membrane positioned substantially between the first and second electrodes. The membrane is compressed between the electrodes dry bonding the membrane with the other electrode thereby forming a good physical bound. Alternatively the membrane may be formed on both electrodes and the membranes are then compressed between the electrodes thereby dry bonding the first and second electrodes together. In yet another embodiment the membrane may be formed separately then compressed between the electrodes thereby dry bonding the membrane with the two electrodes.
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Citations
15 Claims
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1. A method of manufacturing an electrolytic cell comprising the steps of:
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placing a porous membrane between a first electrode and second electrode;
compressing the membrane between the electrodes at a room temperature thereby dry bonding the membrane to the electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of manufacturing an electrolytic cell comprising the steps of:
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mixing a polyvinylidene diflouride homopolymer and solvent to form a solution;
coating said solution on said first electrode;
coating said solution on said second electrode;
immersing said first and second coated electrodes in a liquid filled bath thereby creating a porous membrane on said first and second electrodes;
drying the first and second coated electrodes;
placing the first electrode opposite said second electrode with the respective membranes positioned substantially between said first and second electrodes;
compressing the membranes between the first and second electrodes thereby dry bonding said first and second electrodes together. - View Dependent Claims (9, 10, 11, 12)
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13. A method of manufacturing a lithium secondary cell including a microporous ployvinylidene difluoride homopolymer (PVdF) membrane comprising the steps of:
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providing a lithium based electrode;
placing the PVdF membrane on said electrode; and
compressing said electrode and membrane at a room temperature, wherein said electrode and the PVdF membrane are dry bonded with an adhesion force of at least 10 N/cm2. - View Dependent Claims (14, 15)
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Specification