Identifying and Addressing Critical Challenges of High-Voltage Layered Ternary Oxide Cathode Materials

By Shu Zhang, Jun Ma, Zhenglin Hu, G. Cui, Liquan Chen. Chemistry of Materials, 2019

178 citations recorded by the source corpus.

Layered ternary oxide cathode materials LiNixMnyCo1–x–yO2 (NMC) and LiNixCoyAl1–x–yO2 (NCA) (referred to as ternary cathode materials, TCMs) with large reversible capacity, high operating voltage as well as low cost are considered as the most potential candidate materials for high energy density lithium ion batteries (LIBs) used in hybrid electric vehicles and electric vehicles (EVs). However, next-generation long-range EVs require an energy density of 800 W h kg–1 at the cathode level, which cannot be obtained using the commercially available TCMs. Developing high-voltage TCMs is a promising solution to enhance energy density of LIBs. Nonetheless, the capacity decay, poor long-term cycle life and microcrack at high operating voltage have limited their practical applications. In this paper, the development of the high-voltage TCMs is reviewed from degradation mechanism, cathode electrode modification, electrolyte design, solid state electrolytes and so on. The critical factors, recent progress and perspec...

Subfields: Automotive Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/d2c4d20075d6d1a68ed896fcb4df03fbf70dd297