Electrolyte materials for batteries and methods for use
View Patent ↗An electrolyte solution comprising an additive wherein the additive is not substantially consumed during charge and discharge cycles of the electrochemical cell. Additives include Lewis acids, electron-rich transition metal complexes, and electron deficient pi-conjugated systems.
1. An electrochemical cell, comprising:
a positive electrode comprising a first fluoride compound, the positive electrode producing a second fluoride compound upon discharge;
a negative electrode;
an electrolyte solution comprising a lithium salt and tris(2,2,6,6-tetramethyl-3,5-heptanedionato)scandium(III).
2. The electrochemical cell of claim 1 wherein the tris(2,2,6,6-tetramethyl-3,5-heptanedionato)scandium(III) is
present in the electrolyte solution at concentrations of less than 0.1 mol/L.
3. The electrochemical cell of claim 1 wherein the ratio of the amount of the tris(2,2,6,6-tetramethyl-3,5-heptanedionato)scandium(III) in the electrochemical cell to the amount of first fluoride compound in the electrochemical cell is less than about 0.1.
4. An electrochemical cell, comprising:
a positive electrode comprising a first fluoride compound, the positive electrode producing a second fluoride compound upon discharge;
a negative electrode;
an electrolyte solution comprising a lithium salt and tris(2,2,6,6-tetramethyl-3,5-heptanedionato)titanium(III).
5. The electrochemical cell of claim 4 wherein the tris(2,2,6,6-tetramethyl-3,5-heptanedionato)titanium(III) is present in the electrolyte solution at concentrations of less than 0.1 mol/L.
6. The electrochemical cell of claim 4 wherein the ratio of the amount of the tris(2,2,6,6-tetramethyl-3,5-heptanedionato)titanium(III) in the electrochemical cell to the amount of first fluoride compound in the electrochemical cell is less than about 0.1.
7. A electrolyte solution, comprising:
a lithium salt, an organic solvent, and tris(2,2,6,6-tetramethyl-3,5-heptanedionato)scandium(III).
8. A The electrolyte solution of claim 7 wherein the tris(2,2,6,6-tetramethyl-3,5-heptanedionato)scandium(III)
is present in the electrolyte solution at a concentration of less than 0.1 mol/L.
9. A electrolyte solution, comprising:
a lithium salt, an organic solvent, and tris(2,2,6,6-tetramethyl-3,5-heptanedionato)titanium(III).
10. The electrolyte solution of claim 9 wherein the tris(2,2,6,6-tetramethyl-3,5-heptanedionato)titanium(III) is present in the electrolyte solution at a concentration of less than 0.1 mol/L.