Regeneration of NCM cathode material from spent lithium-ion batteries by solution combustion synthesis and eva‎luation of its structural and electrochemical properties

9/19/2024 12:00:00 AM

Today, due to the advancement of technology and the increase in pollution from fossil fuels, the use of lithium-ion batteries (LIB) has increased significantly. In addition to the environmental hazards of LIBs, the presence of valuable metals such as lithium, cobalt and etc. in spent LIBs has drawn attention to recycling. Considering the large share of the battery industry in the consumption market of lithium and cobalt elements, the rgeneration of cathode materials from spent batteries is the best approach to recycle spent LIBs, and the separation of elements is not economically justified. In this research, the rgeneration of LiNi0.6Co0.2Mn0.2O2 cathode material from spent LIBs was done by solution combustion synthesis method, focusing on the parameters affecting the synthesis. Separation of cathode materials from spent LIBs was done with a series of physical and chemical processes including crushing, sieving, neutral and alkaline dissolution and calcination. Synthesis precursors were obtained from spent cathode materials through oxalate dissolution, crystallization and calcination. Finally, the obtained precursors were used to regenerate LiNi0.6Co0.2Mn0.2O2 cathode material. Also, the effect of parameters, the type of precursor (Li2CO3-(Ni0.6Co0.2Mn0.2)3O4 and C2HLiO4.H2O-(Ni0.6Co0.2Mn0.2)C2O4.2H2O), the amount of citric acid used as fuel (F/M=1, 2, 3 and 4) and the type of fuel (citric acid, PVP, CTAB and the combination of CTAB and PVP) were investigated on the structural and electrochemical properties of the regenerated cathode material. Finally, the best electrochemical performance was obtained for the sample synthesized with Li2CO3-(Ni0.6Co0.2Mn0.2)3O4 precursors and using the CTAB and PVP fuel combination with an equal ratio and a total value of F/M=4. The mentioned cathode material showed the first discharge capacity of 155.89 mAh/g at 0.1 C rate and 93.66% capacity retention after 100 cycles at 0.5 C rate.

باتري ليتيم-يون , بازتوليد مواد كاتدي , سنتز احتراق محلولي , سوخت

Lithium-ion battery , regeneration of cathode materials , solution combustion synthesis , fuel

Hasan Ghadimi mahanipour

Dr. Mandana Adeli-Dr. Seyyed Morteza Masoudpanah