Lithium-ion secondary battery electrode and lithium-ion secondary battery

Abstract

Provided are lithium ions for achieving a lithium-ion secondary battery which is less susceptible to rises in internal resistance even over repeated charge-discharge cycles and which has excellent durability with respect to charge-discharge cycles. A lithium-ion secondary battery 1 is provided with: a positive electrode; a negative electrode 7; a separator 8; an electrolyte solution 9; and a container 10 that houses the positive electrode 4, the negative electrode 7, the separator 8, and the electrolyte solution 9. At least one of the positive electrode mixture layer 3 or the negative electrode mixture layer 6 contains high-dielectric oxide solids 13, and the positive electrode active material 11 or the negative electrode active material 12 has a surface with portions thereof in contact with the high-dielectric oxide solids 13 and portions thereof in contact with the electrolyte solution 9.

Dependencies are inferred from the claim text.