MANUFACTURING DEVICE FOR ELECTRODE MATERIAL, MANUFACTURING METHOD FOR ELECTRODE MATERIAL, AND MANUFACTURING METHOD FOR LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To improve high-rate discharge characteristics of a battery using an electrode material of a lithium secondary battery wherein a conductive auxiliary agent such as carbon is arranged on the surface of an active material particles made of an electrochemically active material formed by a transition metal chalcogen compound, especially, a compound having an olivine structure such as low conductive iron lithium phosphate.

SOLUTION: Carbon is arranged on active material particles by introducing a carbon raw material such as methanol to a heating furnace while agitating active material particles or powder of its precursor by using a rotary firing furnace (rotary kiln) as a heating furnace.

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