Recycling and regeneration process method for waste automobile power battery anode material
A technology of positive electrode material and power battery, which is applied in the field of recycling and regenerating the positive electrode material of waste automobile power battery, can solve the problem of no uniform standard for industrialized recycling, and achieve the effect of realizing sustainable utilization of resources, reducing energy consumption and saving cost.
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Embodiment 1
[0028] Discharge the battery safely to 2.0V; replace the electrolyte, cut the battery along the top with diagonal pliers, disassemble the battery, separate the removed cells, separate the positive electrode, negative electrode, and diaphragm, and the positive electrode part is to be deal with. Clean the negative electrode and separator in a closed environment and collect them for later use; cut the positive electrode part into 4-9cm 2 Place the small pieces in NMP or deionized water to immerse and ultrasonicate for 5 hours, add a strong base to dissolve the residual aluminum chips, and then carry out vacuum drying after centrifugation. After calcining at 500°C for 2.5 hours, the recycled electrode material was obtained, and lithium supplementation was carried out according to n(Ni+Co+Mn) / nLi=1:1.05~1.1, and NH 3 · H 2 O-NH 4 NO 3 The buffer solution is adjusted to pH=8, and the slurry is made in the ball mill, the inlet temperature is set at 180°C, the outlet temperature i...
Embodiment 2
[0030] Discharge the battery safely to 2.0V; replace the electrolyte, cut the battery along the top with diagonal pliers, disassemble the battery, separate the removed cells, separate the positive electrode, negative electrode, and diaphragm, and the positive electrode part is to be deal with. Clean the negative electrode and separator in a closed environment and collect them for later use; cut the positive electrode part into 4-9cm 2 Place the small pieces in NMP or deionized water to immerse and ultrasonicate for 5 hours, add a strong base to dissolve the residual aluminum chips, and then carry out vacuum drying after centrifugation. After calcining at 500°C for 2.5 hours, the recycled electrode material was obtained, and lithium supplementation was carried out according to n(Ni+Co+Mn) / nLi=1:1.05~1.1, and NH 3 · H 2 O-NH 4 NO 3 The buffer solution is adjusted to pH=8, and the slurry is made in the ball mill, the inlet temperature is set at 180°C, the outlet temperature i...
Embodiment 3
[0032] Discharge the battery safely to 2.0V; replace the electrolyte, cut the battery along the top with diagonal pliers, disassemble the battery, separate the removed cells, separate the positive electrode, negative electrode, and diaphragm, and the positive electrode part is to be deal with. Clean the negative electrode and separator in a closed environment and collect them for later use; cut the positive electrode part into 4-9cm 2 Place the small pieces in NMP or deionized water to immerse and ultrasonicate for 5 hours, add a strong base to dissolve the residual aluminum chips, and then carry out vacuum drying after centrifugation. After calcining at 500°C for 2.5 hours, the recycled electrode material was obtained, and lithium supplementation was carried out according to n(Ni+Co+Mn) / nLi=1:1.05~1.1, and NH 3 · H 2 O-NH 4 NO 3 The buffer solution is adjusted to pH = 8, and the slurry is made in the ball mill. The inlet temperature is set at 180°C, the outlet temperature...
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