| 摘要 |
PROBLEM TO BE SOLVED: To provide a negative electrode material for a lithium secondary battery, capable of achieving prolonged cycle life of a lithium secondary battery.SOLUTION: A negative electrode material for a lithium secondary battery comprises powder of an aggregate of particles formed by cutting an aluminum foil with a thickness of 0.15 mm or less. Each of the particles has a size that allows each particle to pass through a sieve with an aperture of 0.1 mm (in accordance with JIS Z8801-3), and the powder has a specific surface area as determined by a BET method of 0.3 m/g or more. |
