US 11,784,349 B2
Lithium metal battery electrolytes and electrochemical cells including the same
Meinan He, Sterling Heights, MI (US); Mei Cai, Bloomfield Hills, MI (US); and Shuru Chen, Troy, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Apr. 1, 2021, as Appl. No. 17/220,058.
Prior Publication US 2022/0320584 A1, Oct. 6, 2022
Int. Cl. H01M 10/00 (2006.01); H01M 10/0568 (2010.01); H01M 10/0525 (2010.01); H01M 10/0569 (2010.01); H01M 10/0567 (2010.01); H01M 4/38 (2006.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 10/0568 (2013.01) [H01M 4/382 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 10/0569 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0034 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electrolyte for a lithium metal battery, the electrolyte comprising:
a nonaqueous aprotic organic solvent; and
a lithium salt dissolved or ionized in the nonaqueous aprotic organic solvent,
wherein the nonaqueous aprotic organic solvent includes a cyclic carbonate, an acyclic carbonate, and an acyclic fluorinated ether having the formula:

OG Complex Work Unit Chemistry
wherein n=0 or 1,
wherein R1 and R2 are each straight-chain C1-C6 fluoroalkyl groups,
wherein, when n=1, R3 is a methylene group or a polyethylene group, and
wherein the lithium salt comprises lithium (fluorosulfonyl)(trifluoromethanesulfonyl)imide.