Nonaqueous electrolyte secondary battery
AssigneePanasonic Corporation
InventorsKazuhiro Iida, Takanobu Chiga, Naoya Morisawa, Atsushi Fukui
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Abstract
A non-aqueous electrolyte secondary cell provided with: a positive electrode that has a positive electrode active material; a negative electrode; and a non-aqueous electrolyte. The positive electrode active material contains a lithium composite oxide containing Ni, and the non-aqueous electrolyte contains a non-aqueous solvent containing a fluorinated chain carboxylic acid ester and an organochlorine compound. The organochlorine compound is represented by general formula CF3CH2CO-CClR1R2 (where in the formula. R1 and R2 are respectively independent, and are selected from a hydrogen, a halogen, a C1-2 alkyl group, or a C1-2 halogenated alkyl group).
Claims6
A non-aqueous electrolyte secondary battery comprising:
- a positive electrode including a positive electrode active material;
- a negative electrode;
- and a non-aqueous electrolyte, wherein
- the positive electrode active material comprises a Ni-containing lithium composite oxide,
- the non-aqueous electrolyte comprises a non-aqueous solvent including a fluorinated chain carboxylate ester, and an organic chlorine compound, and
- the organic chlorine compound comprises at least one of a first compound represented by the general formula:
- CF3CH2CO-CClR1R2, and 2-chloro-1,1,1,3-tetrafluoropentane, wherein R1 and R2 are each independently selected from hydrogen, halogen, an alkyl group having 1 to 2 carbon atoms, and a halogenated alkyl group having 1 to 2 carbon atoms.
Dependencies are inferred from the claim text.