| 摘要 |
PROBLEM TO BE SOLVED: To provide a negative electrode material for a lithium secondary battery in an industrial manner having as much discharge capacity as the maximum level discharge capacity of flaky graphite such as natural graphite or theoretical capacity determined by a graphite structure and overcoming problems on the flaky graphite, and its manufacturing method as well as the lithium secondary battery using the same. SOLUTION: Graphite for a lithium secondary battery negative electrode which is obtained by treating carbon precipitated in the cooling process of a metal and carbon under melted conditions, with the number of flaky particles of size 4 μm or more and less than 200 μm accounting for 80% or less of the total number of particles of size 4 μm or more and less than 200 μm, a carbon content of 90% by mass or more, and a specific surface area of 7 m2/g or less, and an average particle size of 4 μm or more and less than 200 μm, and its preparation as well as the lithium secondary battery using the same as a negative electrode active material, are provided. |
