US 12,456,721 B2
Patterning of active material layer of electrode during continuous extrusion
Chuanlong Wang, Troy, MI (US); Xiaowei Yu, Farmington Hills, MI (US); Ming Wang, Sterling Heights, MI (US); Xiaosong Huang, Novi, MI (US); and Ryan Curtis Sekol, Grosse Pointe Woods, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Nov. 6, 2023, as Appl. No. 18/502,239.
Prior Publication US 2025/0149536 A1, May 8, 2025
Int. Cl. H01M 4/04 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/0435 (2013.01) [H01M 4/0411 (2013.01); H01M 2004/028 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for manufacturing patterned electrodes, comprising:
a) extruding a mixture including an active material, a conductive additive, a binder, and a solvent from an extruder to form an active material layer;
b) laminating the active material layer and a current collector; and
c) patterning the active material layer using a patterned roller including a plurality of projections that form a plurality of features extending into the active material layer,
wherein c) is performed before b).