Beyond Doping and Coating: Prospective Strategies for Stable High-Capacity Layered Ni-Rich Cathodes

This Perspective discusses the prospective strategies for overcoming the stability and capacity trade-off associated with increased Ni content in layered Ni-rich Li[NixCoyMnz]O2 (NCM) and Li[NixCoyAlz]O2 (NCA) cathodes. The Ni-rich NCM and NCA cathodes have largely replaced the LiCoO2 cathodes in commercial batteries because of their lower cost, higher energy density, good rate capability, and reliability that has been extensively field-tested. Nevertheless, they suffer from microcrack generation along grain boundaries and Ni3+/4+ reactivity that rapidly deteriorate electrochemical performance. Doping and coating have been efficient strategies in delaying the onset of the damage, but they fail to overcome the…

• WF
  Welch Foundation

  Awards: F-1436 (CBM), F-1131 (AH)
• GF
  Global Frontier Hybrid Interface Materials

  Award: 2013M3A6B1078875
• MO
  Ministry of Education and Human Resources Development

  Award: 20154010200840
• KI
  Korea Institute of Energy Technology Evaluation and Planning