Extraction of High Purely Nickel from Spent Nickel Catalyst for Cathode Material Lithium-Ion Batteries Ni0.8 Mn0.1 Co0.1

The use of lithium-ion batteries has increased due to the large number of portable devices and electric vehicles that are considered environmentally friendly. The cathode is one of the electrodes that have an important role in ion delivery in lithium-ion batteries. Ni-rich Nickel Manganese Cobalt (NMC) is one of the most frequently used cathodes. The increasing demand for lithium-ion batteries has also led to an increase in the use of nickel as a cathode material, so that other sources of nickel are needed. The use of nickel recovered from a spent nickel catalyst can be a solution for alternative sources of nickel. Spent nickel catalyst is one of the hazardous and toxic wastes, so this recovery process can reduce the amount of catalyst waste. Nickel is extracted from a spent nickel catalyst using the acid leaching method. The acid used is 2M lactic acid with various solid/liquid ratios. Spent nickel catalyst leaching was carried out at 80°C for3 hours. At the same time, the synthesis of NMC 811 material used the co-precipitation method with oxalic acid as the precipitant. Based on the results obtained, the variation of the ratio that produces the highest leaching efficiency is 20 grams/L. The obtained NMC material has high peaks at two theta 15-20° and 40-46°. The morphology of the NMC 811 material is agglomerated with a homogeneous shape and inhomogeneous size. Based on the charge discharge test on the battery, the battery capacity obtained reached 119 mAh.