Electrolyte formulations for lithium ion batteries
Electrolyte solutions including additives or combinations of additives that provide low temperature performance and high temperature stability in lithium ion battery cells.
1. An electrolyte formulation, comprising:
an organic solvent;
a lithium salt present at a concentration suitable for conducting lithium ions through the electrolyte formulation; and
an additive salt comprising sodium oxalate;
wherein the additive salt is different from the lithium salt.
2. The electrolyte formulation of claim 1 further comprising lithium bis(oxalato)borate as a second additive.
3. The electrolyte formulation of claim 1 further comprising cesium nitrate as a second additive.
4. The electrolyte formulation of claim 1 further comprising maleic anhydride as a second additive.
5. The electrolyte formulation of claim 1 further comprising tris(trimethylsilyl)phosphate as a second additive.
6. The electrolyte formulation of claim 1 further comprising trimethylsilyl polyphosphate as a second additive.
7. The electrolyte formulation of claim 1 further comprising 4-fluorophenyl isocyanate as a second additive.
8. The electrolyte formulation of claim 1 further comprising 1,4-butane sultone as a second additive.
9. An electrolyte formulation, comprising:
an organic solvent;
a lithium salt present at a concentration suitable for conducting lithium ions through the electrolyte formulation; and
an additive salt comprising cesium oxalate, wherein the additive salt is different from the lithium salt.
10. An electrolyte formulation, comprising:
an organic solvent;
a lithium salt present at a concentration suitable for conducting lithium ions through the electrolyte formulation; and
an additive salt comprising 1-(4,5-dihydro-1,3-thiazol-2-yl)piperidine oxalate, wherein the additive salt is different from the lithium salt.
11. The electrolyte formulation of claim 9 further comprising lithium bis(oxalato)borate as a second additive.
12. The electrolyte formulation of claim 9 further comprising cesium nitrate as a second additive.
13. The electrolyte formulation of claim 9 further comprising maleic anhydride as a second additive.
14. The electrolyte formulation of claim 9 further comprising tris(trimethylsilyl)phosphate as a second additive.
15. The electrolyte formulation of claim 9 further comprising trimethylsilyl polyphosphate as a second additive.
16. The electrolyte formulation of claim 9 further comprising 4-fluorophenyl isocyanate as a second additive.
17. The electrolyte formulation of claim 9 further comprising 1,4-butane sultone as a second additive.
18. The electrolyte formulation of claim 10 further comprising lithium bis(oxalato)borate as a second additive.
19. The electrolyte formulation of claim 10 further comprising cesium nitrate as a second additive.
20. The electrolyte formulation of claim 10 further comprising maleic anhydride as a second additive.
21. The electrolyte formulation of claim 10 further comprising tris(trimethylsilyl)phosphate as a second additive.
22. The electrolyte formulation of claim 10 further comprising trimethylsilyl polyphosphate as a second additive.
23. The electrolyte formulation of claim 10 further comprising 4-fluorophenyl isocyanate as a second additive.
24. The electrolyte formulation of claim 10 further comprising 1,4-butane sultone as a second additive.