Transfer lamination of electrodes in silicon-dominant anode cells
Systems and methods are provided for high volume roll-to-roll transfer lamination of electrodes for silicon-dominant anode cells.
1. A method for electrode processing in a roll-to-roll system, the method comprising:
applying to each of a plurality of carrier films, at least one precursor composite film;
applying pyrolysis to each of the plurality of carrier films, wherein the pyrolysis is configured for converting a corresponding precursor composite film on each carrier film to a pyrolyzed composite film; and
roll pressing onto two sides of a current collector film, two pyrolyzed mixture films from two corresponding carrier films, to create an electrode composite film.
2. The method of claim 1 , comprising separating the two corresponding different carrier films of the plurality of carrier films after the pressing.
3. The method of claim 1 , comprising moving the plurality of carrier films during the electrode processing in the system using a plurality of moving rollers.
4. The method of claim 1 , comprising applying the pyrolysis at a temperature of >500° C.
5. The method of claim 1 , comprising applying the pyrolysis in a reducing atmosphere.
6. The method of claim 5 , comprising creating reducing atmosphere related conditions during the pyrolysis, the reducing atmosphere related conditions comprising at least one of an inert atmosphere, a vacuum, or flowing of one or more reducing gases.
7. The method of claim 1 , comprising cleaning and inspecting each electrode composite film after pressing.
8. The method of claim 1 , wherein the roll pressing comprises applying one or both of pressure and heat during the pressing.
9. The method of claim 1 , wherein the at least one precursor composite film comprises silicon (Si).