Table 2 Exploratory leaching experiments (E1–E10) of synthetic cathode materials (T = 30 °C, S/L = 31–78 g/L, t = 2 h, V = 400 mL).
From: Leaching of NMC industrial black mass in the presence of LFP
Test | Acidity/M | NMC111/g | LFP added/g | Molar ratio of (LFP/NMC) | Molar ratio of (LFP/(sum Ni + Mn + Co)) | Time of 1 vol.% H2O2 addition/min |
|---|---|---|---|---|---|---|
E1 | 2 | 0 | 12.5 | – | – | – |
E2 | 0.5 | 0 | 12.5 | – | – | – |
E3 | 0.3 | 0 | 12.5 | – | – | – |
E4 | 2 | 0 | 18.7 | – | – | 30 |
E5 | 2 | 12.7 | 0 | – | 0 | – |
E6 | 2 | 12.7 | 6.2 | 0.3 | 0.3 | – |
E7 | 2 | 12.7 | 12.5 | 0.6 | 0.6 | – |
E8 | 2 | 12.7 | 18.7 | 0.9 | 0.9 | – |
E9 | 1 | 12.7 | 18.7 | 0.9 | 0.9 | – |
E10 | 0.5 | 12.7 | 18.7 | 0.9 | 0.9 | – |
