NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery which can retain a high capacity-keeping rate while keeping a high output characteristic.SOLUTION: A nonaqueous electrolyte secondary battery proposed herein may include: a positive electrode collector 51; and a positive electrode active material layer 53 held by the positive electrode collector 51. The positive electrode active material layer 53 includes: a positive electrode active material 210; first conductive materials 221; second conductive materials 222; and a binder (not shown in the drawing). The first conductive materials 221 are directly deposited to the positive electrode active material 210 through no binder. In addition, the second conductive materials 222 are distributed in the positive electrode active material layer 53. In this case, it is preferred that the DBP oil absorption of the first conductive material 221 is larger than that of the second conductive material 222.