| abstract |
[PROBLEMS] A negative electrode for a lithium secondary battery having a high discharge capacity and charge / discharge efficiency and an extremely low discharge potential with respect to Li (when used as a negative electrode, the discharge potential of the battery is high and energy efficient) Provide materials. SOLUTION: The cooling rate at the time of solidification from the molten raw material is 100 ℃ / Liquid solidified at a rate of at least / sec, composition formula: Li a Mg b VO c (where 0.05 ≦ a ≦ 3, 0.12 ≦ b ≦ 2, 2 ≦ 2c-a-2b ≦ 5) A negative electrode material for a lithium secondary battery, comprising a compound represented by the following formula: |