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US 7,682,754 B2Granted
Nonaqueous electrolytic solution for electrochemical cells
AssigneeNovolyte Technologies Inc.
InventorsWu Xu, Zhongyi Deng, Vaikunth S. Prabhu, Pascal Bolomey
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Abstract
The invention relates to the use of an amine oxide as an additive in a nonaqueous electrolytic solution. The electrolytic solution is suitable for use in electrochemical cells such as lithium batteries and lithium ion batteries. Batteries using this electrolyte solution have long life and high capacity retention.
Claims18
A secondary battery comprising
- a. an anode,
- b. a cathode comprising lithium, and
- c. an electrolytic solution comprising
- i. a non-aqueous solvent,
- ii. a salt, and
- iii. an amine oxide having the formula
- wherein R1 and R2 are independently each a C6 to C36 hydrocarbon group, and R3 is a C1 to C36 hydrocarbon group.
4 more elements
A method of making a lithium battery or lithium ion battery comprising:
- a. providing an electrolytic solution comprising
- i. a non-aqueous solvent,
- ii. a lithium containing salt, and
- iii. an amine oxide having the formula
- wherein R1 and R2 are independently each a C6 to C36 hydrocarbon group, and R3 is a C1 to C36 hydrocarbon group,
- b. laminating and winding a cathode, a first porous separator, an anode, and a second porous separator,
- c. placing the wound laminated electrodes and separators in a battery case,
- d. infusing the electrolytic solution into the battery case, and
- e. sealing the battery case containing the electrodes, electrolytic solution and separators.
6 more elements
Dependencies are inferred from the claim text.