Active material, nonaqueous electrolyte battery, battery pack and battery module
摘要
說明書
First, particles of the product of Example A-5 were ground so that the average particle size was 5 μm or less to obtain a ground product. Next, acetylene black, as a conductive agent, was mixed with the active material in an amount of 6 parts by mass relative to the active material to obtain a mixture. Next, the mixture was dispersed in NMP (N-methyl-2-pyrrolidone) to obtain a dispersion. Polyvinylidene fluoride (PVdF), as a binder, was mixed with the dispersion in an amount of 10 parts by mass relative to the product of Example A-5 to prepare a negative electrode slurry. A current collector, formed of aluminum foil, was coated with the slurry using a blade. After the obtained product was dried at 130° C. for 12 hours in vacuum, it was rolled so that a density of the electrode layer (excluding a current collector) was 2.2 g/cm3 to obtain a negative electrode.
(Production of Positive Electrode)
With a commercially available spinel lithium manganese oxide (LiMn2O4) was mixed 5 parts by weight of acetylene black as a conduction aid to obtain a mixture. Next, the mixture was dispersed in NMP to obtain a dispersion. To the dispersion was mixed with PVdF, as a binder, in an amount of 5 parts by weight relative to the lithium manganese oxide to prepare a positive electrode slurry. A current collector, formed of an aluminum foil, was coated with the slurry using a blade. After the obtained product was dried at 130° C. for 12 hours in vacuum, it was rolled so that a density of the electrode layer (excluding a current collector) was 2.1 g/cm3, to obtain a positive electrode.
(Production of Electrode Group)
