| 摘要 |
PURPOSE: To provide an electrode material for a secondary battery (particularly a negative electrode material for a lithium secondary battery) having an excellent charge/discharge capacity and charge/discharge efficiency. In more detail, to provide an electrode material for a secondary battery using very inexpensive specific artificial graphite powder capable of being manufactured in an industrially advantageous process and having a very excellent degree of graphitization. CONSTITUTION: A caking additive A1 which is the can residue obtained when the decompression distillation residue oil generated in a crude oil refining process is partially thermally decomposed by overheated steam is used as a raw material, and the caking additive A1 is coked at the cokable temperature to obtain a coked object A2. The coked object A2 is graphitized at the graphitizable temperature to obtain artificial graphite A3. The powder of the artificial graphite A3 is used as the electrode material for a secondary battery. |
