| abstract |
Provided are: a lithium ion secondary battery having excellent storability and charge/discharge cycle characteristics; and a method for manufacturing the same. The present invention pertains to a lithium ion secondary battery having: an electrode assembly in which a positive electrode and a negative electrode are stacked or wound with a separator therebetween; and a non-aqueous electrolyte solution, the lithium ion secondary battery being characterized in that: negative electrode active materials in the negative electrode include Si-containing material S; the content of material S is at least 5 mass% when the total amount of the negative electrode active materials contained in the negative electrode is 100 mass%; the non-aqueous electrolyte solution includes a solvent containing propylene carbonate and chain carbonate; the volume content of the propylene carbonate in the solvent is 10-50 vol%; the positive electrode has, on at least one surface of a positive electrode current collector, a positive electrode cladding layer containing, as a positive electrode active material, a metal oxide consisting of Li and metal M, which is a metal other than Li; and the upper limit of charging voltage is at least 4.35 V. |