| Budget Amount *help |
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Outline of Final Research Achievements |
In this study, we investigated the separation and recovery of Li and Ni, Co, or Mn by the chlorination method using simulated LIB cathode material (LiNO2(LNO), LiCoO2(LCO), LiMn2O4(LMO)). Next, the selective separation of Li and Ni, Co, or Mn by oxidation treatment of chlorinated LNO, LCO, and LMO was examined based on the characterization results of chlorinated model LIB materials. When all samples were treated by chlorination, volatilization of Li, Ni, Co, or Mn was observed above 700oC. Therefore, it was difficult to separate the constituent elements separately. On the other hand, when LNO, LCO, and LMO were chlorinated up to 600oC and then heat-treated in air up to 1300oC, Li, Ni, Co, and Mn could be selectively separated.
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