NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To suppress the increase in resistance in a high rate cycle.SOLUTION: A nonaqueous electrolyte secondary battery comprises a positive electrode mixture layer 12. The positive electrode mixture layer includes: complex particles 4 including a positive electrode active material 1, a first conductive material 2a and a binder; and a second conductive material 2b disposed on the surface of each complex particle 4, which is smaller than the first conductive material 2a in DBP oil absorption.SELECTED DRAWING: Figure 5