NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK AND RECHARGEABLE VACUUM CLEANER

摘要

A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. At least one of the positive electrode and the negative electrode comprises a current collector made of aluminum or an aluminum alloy and an active material layer laminated on the current collector. The active material layer contains first active material particles having an average particle diameter of 1 mum or less and a lithium diffusion coefficient of 1x10^-9 cm²/sec or less at 20° C., and second active material particles having an average particle diameter of 2 to 50 mum. A true density of the second active material particles is larger by 0.01 to 2.5 g/cm³ than a true density of the first active material particles.