COKING COAL COMPOUND FOR ANODE MATERIAL OF LITHIUM ION SECONDARY BATTERY

Provided is a raw petroleum coke composition as a raw material of an anode carbon material that can improve, when a battery is discharged at a high current, the ratio capable of maintaining the capacity obtained during discharge at a low current. More specifically, provided is a raw petroleum coke composition for an anode carbon material of a lithium ion secondary battery, the raw petroleum coke composition being produced by subjecting a heavy-oil composition to a delayed coking process, and comprising an atomic ratio of hydrogen atoms H to carbon atoms C (H/C atomic ratio) of 0.30 to 0.50, and a micro-strength of 7 to 17% by weight. Further provided are a method for producing an anode carbon material of a lithium ion secondary battery, comprising the steps of: pulverizing the raw petroleum coke composition into particles having an average particle diameter of 5 to 30 µm, and subjecting the particles to carbonization and/or graphitization; and a lithium ion secondary battery comprising an anode comprising such a carbon material.