Remove iron from lithium iron phosphate
PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC Regenerated graphite after purification and activation, at 0.1C capacity of about 380 mAh/g, better than the original graphite. Graphite not only has low capacity, but also poor cycle stability, and the capacity of graphite and graphite fluctuate less. After 100 cycles at 0.5C, the graphite capacity did not decrease and was comparable to that of graphite. At 0.1C, R-LCO and graphite-assembled full-battery capacity exceeds 150 mAh/g, close to commercial electrode materials.
PTMS magnetic separator
The capacity is about 135 mAh/g at 0.5C, slightly lower than that of commercial electrode materials. However, the recycling performance of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC regenerated LCO is slightly better than P-LCO. The closed-loop recycling strategy was applied to commercial mobile phone battery recycling to demonstrate its feasibility. A 43.1g mobile phone battery, rated at 2,900mah, is disassembled into negative, positive, diaphragm, graphite, Li-containing solution and case.
what is magnetic separation in chemistry?
By PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC treatment on the negative electrode, the positive electrode and the solution containing lithium, a total of 14.3g D-LCO (33.1% of the total weight of the battery) and 8.3 g graphite (19.2% of the total weight of the battery) were obtained. And 1.5g Li salt (mainly Li2CO3) was extracted from the solution containing lithium. The lithium content of negative graphite is 3.4%. The mass ratio of D-LCO to Li salt is about 10:1. After regeneration, the capacity of D-LCO was increased from 74.5 mAh/g to 137.8 mAh/g at 0.1 C, and no additional Li salt was needed. The only reagent in the positive regeneration process was water, at a negligible cost.
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