Title: Nonaqueous electrolyte secondary cell
Application Number: 200610166944 Application Date: 2006.12.13
Publication Number: 1967930 Publication Date: 2007.05.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01M10/40;H01M4/02;H01M4/58
Applicant(s) Name: Matsushita Electric Ind Co., Ltd. Address:
Inventor(s) Name: Taniguchi Akihiro;Nagura Kensuke;Takeuchi Takashi
Attorney & Agent: yuhui
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 10 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.
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