Non-aqueous electrolyte secondary battery
AssigneePanasonic Corporation
InventorsAkihiro Taniguchi, Kensuke Nakura, Takashi Takeuchi
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Abstract
A non-aqueous electrolyte secondary battery including: an electrode group in which a positive electrode and a negative electrode are spirally wound with a separator interposed therebetween; and a non-aqueous electrolyte including a non-aqueous solvent and a lithium salt dissolved in the non-aqueous solvent, the positive electrode including a positive electrode material mixture layer containing a nickel-containing lithium composite metal oxide, wherein a product of A and B equals 150 to 350, A equals 15 to 20%, and B equals 8 to 25%, where A (%) represents a porosity of the positive electrode material mixture layer, and B (%) represents a volume percentage of ethylene carbonate in the non-aqueous solvent.
Claims2
A non-aqueous electrolyte secondary battery comprising:
- an electrode group in which a positive electrode and a negative electrode are spirally wound with a separator interposed therebetween;
- and a non-aqueous electrolyte comprising a non-aqueous solvent and a lithium salt dissolved in said non-aqueous solvent,
- said positive electrode including a positive electrode material mixture layer comprising a nickel-containing lithium composite metal oxide as an active material,
- wherein a product of A and B equals 150 to 350, A equals 15 to 20%, and B equals 8 to 25%, where A (%) represents a porosity of said positive electrode material mixture layer, and B (%) represents a volume percentage of ethylene carbonate in said non-aqueous solvent.
Dependencies are inferred from the claim text.