US 12,087,910 B2
Electrolytes for lithium-ion batteries operating at extreme conditions
Xia Cao, Richland, WA (US); Ji-Guang Zhang, Richland, WA (US); and Wu Xu, Richland, WA (US)
Assigned to Battelle Memorial Institute, Richland, WA (US)
Filed by Battelle Memorial Institute, Richland, WA (US)
Filed on May 31, 2023, as Appl. No. 18/326,738.
Application 18/326,738 is a continuation of application No. 17/537,149, filed on Nov. 29, 2021, granted, now 11,705,580.
Application 17/537,149 is a continuation in part of application No. 17/144,600, filed on Jan. 8, 2021, granted, now 11,664,536, issued on May 30, 2023.
Claims priority of provisional application 63/080,486, filed on Sep. 18, 2020.
Claims priority of provisional application 62/970,651, filed on Feb. 5, 2020.
Claims priority of provisional application 62/959,051, filed on Jan. 9, 2020.
Prior Publication US 2023/0378543 A1, Nov. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/0569 (2010.01); H01M 4/38 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/587 (2010.01); H01M 10/0567 (2010.01); H01M 10/0568 (2010.01)
CPC H01M 10/0569 (2013.01) [H01M 4/386 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/587 (2013.01); H01M 10/0567 (2013.01); H01M 10/0568 (2013.01); H01M 2300/0042 (2013.01); H01M 2300/0051 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A battery system, comprising:
an anode comprising an anode material and an anode current collector, where the anode material comprises composite particles comprising carbon and silicon, the composite particles comprise pores, and at least some of the silicon is nanosized silicon is a carbon-based anode, a silicon-based anode, or a silicon/carbon composite-based anode;
a cathode comprising a cathode material and a cathode current collector; and
an electrolyte comprising,
a lithium salt,
a nonaqueous solvent comprising a carboxylate ester, a carbonate ester other than ethylene carbonate (EC), vinylene carbonate (VC), or fluoroethylene carbonate (FEC), an orthoformate, an ether, a nitrile, or any combination thereof, wherein the lithium salt is soluble in the nonaqueous solvent, and wherein the nonaqueous solvent does not comprise a nonaqueous solvent other than those listed in an amount >1 wt %,
a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the nonaqueous solvent, and wherein the diluent does not comprise a diluent other than those listed in an amount >1 wt %, and
an additive having a different composition than the lithium salt, a different composition than the nonaqueous solvent, and a different composition than the diluent, wherein the additive does not consist of an organophosphate,
wherein if the nonaqueous solvent consists of one or more carbonate esters, the additive does not consist of FEC.