Nonaqueous electrolyte secondary battery

Abstract

A nonaqueous electrolyte secondary battery according to one example of an embodiment includes: a wound electrode assembly in which a positive electrode and a negative electrode are wound with at least one separator interposed therebetween. In the nonaqueous electrolyte secondary battery, a negative electrode lead is bonded to an inner surface X of a negative electrode collector facing the inside in a radial direction, and an insulating tape is adhered to, among surfaces of an overlapping portion of the negative electrode lead and the negative electrode collector, at least a surface at an outer side in the radial direction of the electrode assembly. The insulating tape includes a base material layer, an adhesive layer, and an inorganic particle-containing layer formed therebetween, and the inorganic particle-containing layer contains 20 percent by weight or more of inorganic particles with respect to the weight of the layer described above.

Dependencies are inferred from the claim text.