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.