Materials for battery electrolytes and methods for use
AssigneeWildcat Discovery Technologies, Inc.
InventorsVinay V. Bhat, Gang Cheng, Steven Kaye, Bin Li, Risa Olugbile, Jen-Hsien Yang
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Abstract
Described herein are materials for use in electrolytes that provide a number of desirable characteristics when implemented within batteries, such as high stability during battery cycling up to high temperatures high voltages, high discharge capacity, high coulombic efficiency, and excellent retention of discharge capacity and coulombic efficiency over several cycles of charging and discharging. In some embodiments, a high voltage electrolyte includes a base electrolyte and a set of additive compounds, which impart these desirable performance characteristics.
Claims20
A composition for use in an electrolyte solution, comprising:
- a compound represented by the formula (I):
- wherein n is an integer from 1 to 20;
- X is represented by the formula (II):
- wherein for each X of the n number of X's, Ra is selected from the group consisting of hydrogen, substituted and unsubstituted C1-C20 alkenyl groups, Rb, is either not present or hydrogen, and Rc and Rd are each independently selected from the group consisting of substituted and unsubstituted C1-C20 alkyl groups, substituted and unsubstituted C1-C20 alkenyl groups, substituted and unsubstituted C1-C20 alkynyl groups, and substituted and unsubstituted C5-C20 aryl groups;
- and
- R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of substituted and unsubstituted C1-C20 alkyl groups, substituted and unsubstituted C1-C20 alkenyl groups, substituted and unsubstituted C1-C20 alkynyl groups, and substituted and unsubstituted C5-C20 aryl groups.
An electrolyte solution comprising:
- a salt;
- a solvent;
- and
- a compound represented by the formula (I):
- wherein n is an integer from 1 to 20;
- X is represented by the formula (II):
- wherein for each X of the n number of X's, Ra is selected from the group consisting of substituted and unsubstituted C1-C20 alkenyl groups, Rb, is either not present or hydrogen, and Rc and Rd are each independently selected from the group consisting of hydrogen, substituted and unsubstituted C1-C20 alkyl groups, substituted and unsubstituted C1-C20 alkenyl groups, substituted and unsubstituted C1-C20 alkynyl groups, and substituted and unsubstituted C5-C20 aryl groups;
- and
- R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of substituted and unsubstituted C1-C20 alkyl groups, substituted and unsubstituted C1-C20 alkenyl groups, substituted and unsubstituted C1-C20 alkynyl groups, and substituted and unsubstituted C5-C20 aryl groups.
A method of making an electrolyte solution, comprising:
- providing a non-aqueous solvent;
- providing a lithium salt;
- and
- providing a compound represented by the formula (I):
- wherein n is an integer from 1 to 20;
- X is represented by the formula (II):
- wherein for each X of the n number of X's, Ra is selected from the group consisting of substituted and unsubstituted C1-C20 alkenyl groups, Rb, is either not present or hydrogen, and Rc and Rd are each independently selected from the group consisting of hydrogen, substituted and unsubstituted C1-C20 alkyl groups, substituted and unsubstituted C1-C20 alkenyl groups, substituted and unsubstituted C1-C20 alkynyl groups, and substituted and unsubstituted C5-C20 aryl groups;
- and
- R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of substituted and unsubstituted C1-C20 alkyl groups, substituted and unsubstituted C1-C20 alkenyl groups, substituted and unsubstituted C1-C20 alkynyl groups, and substituted and unsubstituted C5-C20 aryl groups;
- and combining the solvent, salt, and compound.
Dependencies are inferred from the claim text.