| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery having superior charging and discharging cycle characteristics and output characteristic at high rate by forming a positive electrode mix of a positive electrode active material, a conductive auxiliary and a binder, and forming the conductive auxiliary of the fiber-like carbon material and the carbon material containing the granular carbon. SOLUTION: When the entire conductive auxiliary is set at 100 wt.%, a fiber-like carbon is preferably contained at 1-20 wt.%, and a granular carbon is preferably contained at 99-80 wt.%. The granular carbon contains the crystal carbon and the non-crystalline carbon, and in the case where the overall conductive auxiliary is set at 100 wt.%, the fiber-like carbon is preferably contained at 1-20 wt.%, and the granular carbon is preferably contained at 99-80 wt.% Furthermore, when the entire granular carbon is set at 100 wt.%, a crystal carbon is preferably contained at 90-60 wt.%, and a non-crystal carbon is preferably contained at 10-40 wt.%. It is preferable that the fiber-like carbon have an aspect ratio at 20-100,000 and a fiber diameter at 0.001-2 μm, and the granular carbon having an aspect ratio at 1-5. |
