Process for fabricating continuously coated electrodes on a...

Details Process for fabricating continuously coated electrodes on a... Process for fabricating continuously coated electrodes on a...

H - Electricity

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H01M 4/02 (2006.01) H01M 4/04 (2006.01) H01M 4/06 (2006.01) H01M 4/58 (2006.01) H01M 4/62 (2006.01) H01M 4/64 (2006.01) H01M 4/66 (2006.01) H01M 6/16 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2376895

The invention is directed to an electrochemical cell having at least one of its electrodes produced by coating a slurry mixture of an active material, possibly a conductive additive, and a binder dispersed in a solvent and contacted to a perforated current collector foil. It is particularly important that the active slurry does not move through the perforations of the current collector. For this reason, a barrier is placed against the opposite side of the current collector to block the perforations as the current collector is being coated with the slurry. After volatilizing the solvent, a second, different active material is coated to the opposite side of the current collector, either as a slurry, a pressed powder, a pellet or a free standing sheet. An example of this is a cathode having a configuration of: SVO/current collector CF x. The opposed active materials on the current collector can also be of the same chemistry.

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