US 11,695,104 B2
Method and system for improved performance of silicon anode containing cells through formation
Uday S. Kasavajjula, Irvine, CA (US); Benjamin Park, Mission Viejo, CA (US); David J. Lee, Irvine, CA (US); and SungWon Choi, San Diego, CA (US)
Assigned to ENEVATE CORPORATION, Irvine, CA (US)
Filed by Enevate Corporation, Irvine, CA (US)
Filed on Aug. 23, 2019, as Appl. No. 16/549,926.
Prior Publication US 2021/0057714 A1, Feb. 25, 2021
Int. Cl. H01M 4/04 (2006.01); H01M 10/44 (2006.01); H01M 4/38 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/0447 (2013.01) [H01M 4/386 (2013.01); H01M 10/0525 (2013.01); H01M 10/446 (2013.01)] 20 Claims
OG exemplary drawing
 
9. A method of forming a battery, the method comprising:
subjecting a battery comprising an anode, a nickel oxide containing cathode, and an electrolyte to a formation process, the anode comprising greater than 50% silicon, wherein the formation process comprises, for at least one cycle:
charging the battery at a 1 C rate to at least a formation charge threshold of 3.8 volts or greater until a current in the battery reaches C/20; and
discharging the battery to at least a formation discharge threshold of less than 2.5 volts, wherein the formation discharge threshold is lower than a discharge threshold used during normal operation of the battery.