A nonaqueous electrolyte secondary battery 10 according to an embodiment
of the invention includes a positive electrode 11, a negative electrode
12, a separator 13 and a nonaqueous electrolyte liquid in which not only
the positive electrode 11 contains a positive electrode active material
charged at or higher than 4.3 V based on lithium and a halogenated cyclic
carbonate is added in the nonaqueous electrolyte liquid, but also an
inorganic insulating material particle layer is formed on the surface of
at least either of the positive electrode 11, the negative electrode 12
and the separator 13. By employing such a constitution in the present
invention, a nonaqueous electrolyte secondary battery using a positive
electrode charged at a high electric potential of 4.3 V or more based on
lithium in which the amount of a generated gas is small even when the
battery is overcharged at higher temperatures, and the impact safety and
reliability thereof are high, can be provided.