US 11,876,181 B2
Lithium ion battery electrolyte additive
Surya S. Moganty, Henrietta, NY (US); Rutvik Vaidya, Rochester, NY (US); Xiaojing Zhu, Rochester, NY (US); Yue Wu, Rochester, NY (US); John Sinicropi, Rochester, NY (US); and Gabriel Torres, Rochester, NY (US)
Assigned to NOHMS Technologies, Inc., Rochester, NY (US)
Filed by NOHMS Technologies, Inc., Rochester, NY (US)
Filed on Jun. 1, 2021, as Appl. No. 17/335,551.
Claims priority of provisional application 63/032,977, filed on Jun. 1, 2020.
Prior Publication US 2021/0376382 A1, Dec. 2, 2021
Int. Cl. H01M 10/05 (2010.01); H01M 10/0567 (2010.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01); H01M 4/38 (2006.01); H01M 50/491 (2021.01); H01M 10/0569 (2010.01)
CPC H01M 10/0567 (2013.01) [H01M 4/386 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 50/491 (2021.01); H01M 2300/0028 (2013.01)] 34 Claims
 
1. An electrochemical energy storage device electrolyte comprising:
a) an aprotic organic solvent system;
b) a metal salt; and
c) at least one thiophosphate additive having a nitrile terminal group, according to the formula:

OG Complex Work Unit Chemistry
wherein:
Y is oxygen or sulfur;
X is independently oxygen or sulfur, with the proviso that if Y is oxygen then at least one X is sulfur;
m and n are either 0, 1, 2 or 3; but m and n must sum equal to 3;
R1 and R2 are independently a C1-C10 substituted or unsubstituted alkyl group, or aryl group; wherein the hydrogen atoms can be unsubstituted or can be a halogen, alkyl, alkoxy, perfluorinated alkyl, silyl, siloxy, silane, sulfoxide, amide, azo, ether, and thioether group or combinations thereof.