Adsorption of lithium in the manganese hydroxide precipitation processes

Abstract

Lithium Manganese is an important ingredient in the process of making lithium battery cathode materials. The purpose of this study was to observe the presence of lithium ions in the manganese hydroxide deposition process in mixing MnSO4, LiCl, and NH4OH. The expected result is that the adsorbed lithium ion reacts with manganese hydroxide and settles when sintered at high temperatures. In this experiment, the addition of MnSO4 varied by 5, 10, 15, 20, 25 grams in 200 ml of LiCl solution with a concentration of 10 g / l and ammonia 25% by volume was added. The resulting solids were calcined at 800 °C for 24 hours. The results showed that the best adsorption of lithium ions on the addition of manganese sulfate was 15 g and 25 g. Characterization results obtained by solids have a 3.3% LiMn2O4 phase and 96.7% Li2Mn2O4 at the addition of 15 g manganese sulfate. On the addition of 25 g of manganese sulfate, 36.6% of LiMn2O4 and 63.4% of Li2Mn2O4 were obtained. The success of this study will make it easier for us to synthesize the manufacture of lithium battery cathode materials such as lithium manganese phosphate.