Patent ID: 8945445
Filing Date: 2015-02-03
Classification: C04B,H01M,Y02E,Y02P,Y02T

Abstract:
1. A method of producing an anode material for a non-aqueous electrolyte secondary battery, comprising: cooling a petroleum based or coal based pitch to a softening point or below so that the petroleum based or coal based pitch is solidified to obtain a solidified pitch without steps of blending by addition of an additive and extracting the additive with a solvent, grinding the solidified pitch to form a fine pitch powder having a median size of 5 μm to 40 μm, compression molding the fine pitch powder to form a porous compression molded pitch, and subjecting the porous compression molded pitch to infusibilization treatment to obtain an infusibilized pitch having an oxygen content of 5 to 25 wt %.