18469759. ROLL PRESS FOR TAILORED POROSITY ELECTRODES (GM Global Technology Operations LLC)
ROLL PRESS FOR TAILORED POROSITY ELECTRODES
Organization Name
GM Global Technology Operations LLC
Inventor(s)
Joel G. Toner of Imlay City MI US
Anil K. Sachdev of Rochester Hills MI US
Nicole Ellison of Southfield MI US
ROLL PRESS FOR TAILORED POROSITY ELECTRODES
This abstract first appeared for US patent application 18469759 titled 'ROLL PRESS FOR TAILORED POROSITY ELECTRODES
Original Abstract Submitted
Aspects of the disclosure include a roll press design for manufacturing tailored porosity electrodes. An exemplary roll press includes a top roller and a bottom roller separated from the top roller by a gap. At least one of the top roller and the bottom roller includes a raised region and an indented region. The raised region includes a first radius and the indented region includes a second radius less than the first radius. The gap includes a distance selected to accommodate a current collector. The current collector includes a bare portion and a coated portion having thereon an electrode material of a first thickness. A difference between the first radius and the second radius is selected, based on the first thickness, to evenly distribute stress across the bare portion and the coated portion of the current collector during a calendering process for forming a tailored porosity electrode.