Non-aqueous electrolyte rechargeable battery

A non-aqueous electrolyte rechargeable battery, comprising:

• a positive electrode plate;
• a negative electrode plate;
• a separator insulating the positive electrode plate and the negative electrode plate;
• and
• a non-aqueous electrolyte solution, wherein:
• the positive electrode plate includes a positive electrode current collector, a positive electrode mixture layer formed on part of at least one surface of the positive electrode current collector, and an insulating protective layer formed on the at least one surface of the positive electrode current collector, the insulating protective layer being adjacent to the positive electrode mixture layer;
• the insulating protective layer includes an interposed portion located between the positive electrode mixture layer and the positive electrode current collector;
• and
• the insulating protective layer further includes a cavity extending between the interposed portion and the positive electrode current collector, the cavity dimensioned to be 3 μm or greater in a thickness direction of the positive electrode plate and in a range of 5 to 100 μm, inclusive, in a widthwise direction of the positive electrode plate.