首页|Challenges and prospects of nickel-rich layered oxide cathode material

Challenges and prospects of nickel-rich layered oxide cathode material

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  • NSTL
  • Elsevier
? 2022 Elsevier B.V.The increasing electromobility demands rechargeable batteries with high energy density and enhanced electrochemical properties. However, the commercialized lithium-ion batteries experience several critical challenges related to cost-effectiveness, long-term safety and calendar life. Ni-rich layered oxides, LiNixCoyMnzO2 (NCM) and LiNixCoyAlzO2 (NCA) (x + y + z = 1, x ≥ 0.8) have been considered as next-generation cathode materials with the capability to achieve high energy density (800 Wh kg?1) and high operating voltage with low cost. However, their intrinsic unstable behavior, including surficial/interfacial issues, fatigue, inter/intragranular cracking, parasitic side reactions and thermal runway, causes severe capacity and voltage fading, deprived rate capability, and safety concerns during the charge/discharge process. This review article focuses on degradation mechanisms, challenges, and the most recent approaches, including doping, surface coating, structural engineering, dual modification, concentration gradient, and single-crystal cathodes were precisely summarized. Besides, the new series of Ni-based cathodes were discussed to alter the primary microstructural particle by replacing Co/Mn/Al in NCM and NCA. Notably, the compatibility and interfacial challenges of Ni-rich cathodes with solid-state electrolytes were elaborated to stabilize the electrochemical performance of this high-voltage cathode in all-solid-state batteries (ASSBs). The outlook presents a perception towards the practical application of Ni-rich layered oxide cathode materials in electromobility.

All-solid-state batteriesDegradation mechanismInterfacial engineeringInterfacial issuesLithium-ion batteriesModification strategiesNi-rich layered oxide

Jamil S.、Xu M.、Wang G.、Fasehullah M.

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Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies School of Materials and Energy Southwest University

Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and Engineering Xiangtan University

State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University

2022

10.1016/j.jallcom.2022.164727

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN：0925-8388
年,卷(期)：2022.909
  • 23
  • 245