Non-aqueous electrolyte battery
AssigneePanasonic Corporation
InventorsKoshi Takamura, Yasuhiko Bito
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Abstract
A non-aqueous electrolyte battery including a negative electrode including metal lithium or a lithium alloy as a negative electrode active material, a positive electrode including a fluorinated graphite as a positive electrode active material, a separator provided between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The concentration ratio [F]/[C] of fluorine atoms to carbon atoms on the surface of the fluorinated graphite is 1.0 or more and less than 1.8. This improves the large-current discharge characteristics particularly in a low temperature environment.
Claims13
A non-aqueous electrolyte battery comprising:
- a positive electrode including a positive electrode active material, said positive electrode active material containing a first fluorinated graphite having a concentration ratio [F]/[C] of fluorine atoms to carbon atoms on the surface of said first fluorinated graphite of from 1.0 to less than 1.8, said first fluorinated graphite has a total pore volume of from 0.05 cm3/g to 1.0 cm3/g;
- a negative electrode including a negative electrode active material, said negative electrode active material containing metal lithium or a lithium alloy;
- a separator disposed between said positive electrode and said negative electrode;
- and
- a non-aqueous electrolyte.
Dependencies are inferred from the claim text.