01552nas a2200205   4500008004100000022001400041245008700055210006900142260000800211300001100219490000600230520087600236653002201112653002101134653001601155653002701171100001701198700001701215856011401232       2021                        eng d  a2666-790800aCobalt recovery from spent Li-ion batteries using lactic acid as dissolution agent0 aCobalt recovery from spent Liion batteries using lactic acid as   cJUL  a1001220 v33 aThe eﬀective recovery of cobalt from spent cathode materials is a critical issue and becomes a necessary assignment for the waste treatment of spent lithium-ion batteries (LIBs) in concern with waste to wealth. The dissolution process encompasses an organic acid leaching followed by recovery of pure Co oxalate. The use of lactic acid effectively improves the leaching of spent LiCoO2 materials with ascorbic acid. The leaching efficiencies of 99% for Li and 98% for Co were achieved under the optimal condition of 0.5 mol/L lactic acid and 0.02 mol/L ascorbic acid, solid/liquid ratio of 2 g/L, leaching time of 360 min and temperature of 90 °C. Based on the kinetic analysis, the enhancement leaching process is mainly on the concentration of dissolution reagent. Compared to other organic acids used previously, lactic acid showed better dissolution behavior.10aCathode recycling10aKinetic analysis10aLactic acid10aSpent Li-ion batteries1 aSanthosh, G.1 aNayaka, G.P.  uhttps://library.ncl.res.in/content/cobalt-recovery-spent-li-ion-batteries-using-lactic-acid-dissolution-agent