NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

In a nonaqueous electrolyte secondary battery including a positive electrode (11) whose surface has a positive electrode mixture layer containing a mixture of a conductive carbon material and a positive electrode active material containing a lithium-containing transition metal composite oxide having a layer structure and represented by the general formula LiNiMO(where M represents one or more kinds of elements, and a and x satisfy the conditions 0