| 摘要 |
This nonaqueous-electrolyte secondary battery is characterized in that the positive-electrode mixture thereof contains: a positive-electrode active material which has a particle diameter of 10μm or less and has, as the principal component thereof, a substance represented by the compositional formula Lia(NibCocMnd)1-x-yZrxMyO2 (Therein, a=1.10±0.05, 0.3≤b≤0.5, 0.3≤c≤0.5, b+c+d=1, 0.001≤x≤0.01, 0≤y≤0.1, and M is an element selected from Ti, Nb, Mo, Zn, Al, Sn, Mg, Ca, Sr and W.); and an acetylene black which serves as a conductive agent and has a specific surface area of 25m2/g to 50m2/g, inclusive, when measured by the BET method. The nonaqueous-electrolyte secondary battery is further characterized in that the packing density of the positive-electrode active material in the positive-electrode mixture is 3.5g/cm3 or less. |
