High Value-Added Utilization of Waste Hydrodesulfurization Catalysts: Low-Cost Synthesis of Cathode Materials for Lithium-Ion Batteries

This work introduces a one-step method for the preparation of layered oxide cathode materials utilizing pure Ni and Co mixed solution obtained from waste hydrodesulfurization (HDS) catalyst. An efficient non-separation strategy with pyrometallurgical-hydrometallurgical (pyro-hydrometallurgical) process consisting roasting leaching is proposed. Most impurity metal elements such as Mo V were removed by simple water after HDS catalyst was roasted Na2CO3 at 650 °C 2.5 h. Additionally, 93.9% 100.0% recovered H2SO4 90 Then, LiNi0.533Co0.193Mn0.260V0.003Fe0.007Al0.004O2 (C–NCM) successfully synthesized hydroxide co-precipitation high temperature solid phase methods using above solution. The final C–NCM material exhibits excellent electrochemical performance discharge specific capacity 199.1 mAh g?1 0.1 C cycle retention rate 79.7% 200 cycles 1 C. novel synthesis can significantly improve production efficiency realize added-value utilization resources in