A nonaqueous electrolyte secondary battery that releases a reduced amount of gas when stored in a highly charged state at high temperatures, including a positive electrode containing a positive electrode active material capable of storing and releasing lithium ions, a negative electrode containing a negative electrode active material capable of storing and releasing lithium ions, and a nonaqueous electrolyte, wherein the positive electrode active material includes secondary particles formed by the aggregation of primary particles including a lithium transition metal oxide containing lithium, cobalt, nickel, manganese and aluminum, the secondary particles have on the surface thereof a recess formed between the primary particles adjacent to one another and a compound containing boron and oxygen is attached to the recess, and the proportion of cobalt in the lithium transition metal oxide is not less than 80 mol % relative to the total molar amount of the metal elements except lithium.