POSITIVE ELECTRODE MIXTURE, POSITIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

Disclosed are: a positive electrode mixture which provides a nonaqueous electrolyte secondary battery that is capable of exhibiting high output at high current rate; and a positive electrode. Specifically disclosed is a positive electrode mixture which contains a positive electrode active material powder, a conductive agent, a binder and a solvent. The positive electrode active material powder is composed of particles having an average particle diameter of 0.05-1μm (inclusive) and has a tap density of 0.8-3.0 g/cm3. The amount of the conductive agent relative to 100 parts by weight of the positive electrode active material powder is 0.5-20 parts by weight; the amount of the binder relative to 100 parts by weight of the positive electrode active material powder is 0.5-10 parts by weight; and the amount of the solvent relative to 100 parts by weight of the positive electrode active material powder is 10-120 parts by weight. The positive electrode mixture has a viscosity of 1,000-25,000 mPa·s. Also specifically disclosed is a positive electrode which is obtained by applying the positive electrode mixture to a collector and drying the positive electrode mixture thereon.