Doping Strategy in Developing Ni-Rich Cathodes for High-Performance Lithium-Ion Batteries

Doping is indispensable for ensuring the long-term cycling stability of the Ni-rich layered cathodes. However, using a single type of dopant limits the development of a stable, high-energy cathode material in a single shot. In this study, a dual doping strategy using Al3+ and Nb5+ ions was adopted to improve the cycling stability of Li[Ni0.92Co0.04Mn0.04]O2 (NCM92) cathode; Al3+ doping fortifies the crystal structure, while Nb5+ doping optimized the morphology of the primary particles. The dual doping strategy not only combines the benefits of both dopants simultaneously but also demonstrates excellent performance enhancement through synergistic effects. The Li[Ni0.905Co0.04Mn0.04Al0.005Nb0.01]O2 (AlNb-NCM92)…

• MO
  Ministry of Trade, Industry and Energy

  Award: 20214000000320
• CB
  Companhia Brasileira de Metalurgia e Mineração