US 12,456,780 B2
Electrochemical cells with multiple separators, and methods of producing the same
Junzheng Chen, Concord, MA (US); Naoki Ota, Lexington, MA (US); Jeffry Disko, Lexington, MA (US); and Anthony D'Angelo, Medford, MA (US)
Assigned to 24M Technologies, Inc., Cambridge, MA (US)
Filed by 24M Technologies, Inc., Cambridge, MA (US)
Filed on Apr. 29, 2022, as Appl. No. 17/733,658.
Claims priority of provisional application 63/181,721, filed on Apr. 29, 2021.
Prior Publication US 2022/0352597 A1, Nov. 3, 2022
Int. Cl. H01M 50/414 (2021.01); H01M 4/131 (2010.01); H01M 4/136 (2010.01); H01M 4/1391 (2010.01); H01M 4/1397 (2010.01); H01M 10/0562 (2010.01); H01M 50/403 (2021.01); H01M 50/46 (2021.01); H01M 50/491 (2021.01)
CPC H01M 50/414 (2021.01) [H01M 4/131 (2013.01); H01M 4/136 (2013.01); H01M 4/1391 (2013.01); H01M 4/1397 (2013.01); H01M 10/0562 (2013.01); H01M 50/403 (2021.01); H01M 50/46 (2021.01); H01M 50/491 (2021.01); H01M 2300/0051 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of forming an electrochemical cell, the method comprising:
disposing an anode material onto an anode current collector;
disposing a first separator on the anode material;
disposing a cathode material onto a cathode current collector;
disposing a second separator onto the cathode material;
wetting at least one of the first separator or the second separator with an electrolyte solution; and
disposing the first separator on the second separator to form the electrochemical cell,
wherein at least one of the anode material or the cathode material is a semi-solid electrode material including an active material, a conductive material, and a volume of a liquid electrolyte;
and wherein less than about 10% by volume of the liquid electrolyte and less than about 10% by volume of the electrolyte solution evaporates during the forming of the electrochemical cell.