US 12,272,813 B1
Selected particle size dry electrode for storage devices
Mitchell Miller, Mission (CA); Ali Khosrozadeh, Abbotsford (CA); Behzad Gorji Pour Shafiee, Abbotsford (CA); Mohsen Sadeghi, Abbotsford (CA); Omar Khaled Omar Bin Gah, Abbotsford (CA); Sara Abouali, Coquitlam (CA); and Graham Miles, Abbotsford (CA)
Assigned to Atlas Power Technologies Inc., Abbotsford (CA)
Appl. No. 18/856,433
Filed by Atlas Power Technologies Inc., Abbotsford (CA)
PCT Filed Apr. 27, 2024, PCT No. PCT/CA2024/050573
§ 371(c)(1), (2) Date Oct. 11, 2024,
.
Claims priority of provisional application 63/620,961, filed on Jan. 15, 2024.
Int. Cl. H01M 4/04 (2006.01); H01M 4/583 (2010.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/0435 (2013.01) [H01M 4/0471 (2013.01); H01M 4/583 (2013.01); H01M 4/623 (2013.01); H01M 2004/021 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A process for manufacturing a film for an energy storage device, comprising the steps of:
removing particles below a first threshold size from a particulate active material, to result in sorted particulate active material;
mixing the sorted particulate active material with a binder or binders to form a mixture;
fibrillating the mixture, thereby forming a fibrillated mixture;
removing particles below a second threshold size from the fibrillated mixture, to result in an upper cut of the fibrillated mixture;
de-clumping the upper cut of the fibrillated mixture, thereby forming a de-clumped, fibrillated mixture;
heating the de-clumped, fibrillated mixture between rollers to form the film, the rollers being at a temperature between 50° C. and 160° C.; and
actively cooling the film to between 10° C. and 70° C.;
wherein the film is a dry electrode film or a dry electrolyte film.