US 12,278,351 B2
Electrochemically recycling a lithium-ion battery
Steven E. Sloop, Bend, OR (US); and Lauren E. Crandon, Bend, OR (US)
Assigned to HULICO LLC, Bend, OR (US)
Filed by Hulico LLC, Bend, OR (US)
Filed on Feb. 9, 2022, as Appl. No. 17/668,257.
Claims priority of provisional application 63/148,095, filed on Feb. 10, 2021.
Prior Publication US 2022/0271356 A1, Aug. 25, 2022
Int. Cl. H01M 10/00 (2006.01); B01J 19/00 (2006.01); B01J 19/08 (2006.01); C01G 53/44 (2025.01); H01M 4/04 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/54 (2006.01); H01M 4/02 (2006.01)
CPC H01M 10/54 (2013.01) [B01J 19/0013 (2013.01); B01J 19/088 (2013.01); C01G 53/44 (2013.01); H01M 4/0438 (2013.01); H01M 4/0471 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); B01J 2219/00033 (2013.01); B01J 2219/0801 (2013.01); B01J 2219/089 (2013.01); C01P 2002/50 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of recycling a positive electrode material of a lithium-ion battery, the positive electrode material comprising a metal m having a n+ oxidation state (mn+), the method comprising:
forming a reaction mixture comprising the positive electrode material, an oxidizing agent, and lithium ions; and
electrochemically replenishing the positive electrode material with lithium via electrochemical reduction of the lithium ions while maintaining the n+ oxidation state of the metal m in the positive electrode material via the oxidizing agent.