US 12,463,215 B2
Method and system for sulfur and sulfur-containing chemicals as cathode additives for silicon anode-based lithium ion batteries
Liwen Ji, San diego, CA (US); Benjamin Park, Mission Viejo, CA (US); and Jeremy Chang, Irvine, CA (US)
Assigned to Enevate Corporation, Irvine, CA (US)
Filed by Enevate Corporation, Irvine, CA (US)
Filed on Dec. 6, 2019, as Appl. No. 16/706,234.
Prior Publication US 2021/0175504 A1, Jun. 10, 2021
Int. Cl. H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 10/0525 (2010.01); H01M 10/0565 (2010.01)
CPC H01M 4/5815 (2013.01) [H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0565 (2013.01)] 8 Claims
 
1. A battery, the battery comprising:
a silicon-based anode, an electrolyte, and a cathode, wherein the cathode comprises an active material and a sulfur-containing additive;
wherein said sulfur-containing additive is a transition metal polysulfide complex and wherein said transition metal polysulfide complex is (C5H5)2TiS5, [Ni(S4)2]2−, or [Pt(S5)3]2−;
wherein the sulfur-containing additive comprises 5% or less by weight of the active material;
wherein the cathode active material comprises one or more of: nickel cobalt aluminum oxide (NCA), nickel cobalt manganese oxide (NCM), lithium cobalt oxide (LCO), lithium manganese oxide (LMO), Ni-rich layered oxides, Li-rich layered oxides, and spinel oxides LiNi0.5Mn1.5O4; and
wherein the anode comprises an active material that comprises between 50% to 95% silicon by weight.