NON-AQUEOUS ELECTROLYTIC SOLUTION AND LITHIUM SECONDARY BATTERY
0 Assignments
0 Petitions
Accused Products
Abstract
A non-aqueous electrolytic solution favorably employable for a lithium secondary battery employs a non-aqueous electrolytic solution which comprises a non-aqueous solvent and an electrolyte which further contains 0.001 to 0.8 weight % of a biphenyl derivative having the formula:
in which each of Y1 and Y2 represents hydroxyl, alkoxy, hydrocarbyl, hydrogen, acyloxy, alkoxycarbonyloxy, alkylsulfonyloxy, or halogen, and each of p and q is an integer of 1 to 3.
-
Citations
16 Claims
-
1-10. -10. (canceled)
- 11. A method for operating a lithium secondary battery comprising cyclically charging and discharging the battery in a voltage range having a maximum operating voltage exceeding 4.2 V, the battery comprising a positive electrode, a negative electrode comprising graphite, and a non-aqueous electrolytic solution comprising a cyclic carbonate, a linear chain carbonate and an electrolyte, the non-aqueous electrolytic solution further containing 0.03 to 0.5 weight % of biphenyl.
Specification