Chemical Research in Chinese Universities ›› 2025, Vol. 41 ›› Issue (6): 1620-1627.doi: 10.1007/s40242-025-5209-3

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Li1.3Al0.3Ti1.7(PO4)3-coated Ternary Cathode Materials for High Performance Lithium-ion Batteries

CAI Changbin, FAN Zehui, XU Yunhua   

  1. School of Materials Science and Engineering, State Key Laboratory of Advanced Materials for Intelligent Sensing, National Industry-Education Platform for Energy Storage, Tianjin University, Tianjin 300072, P. R. China
  • Received:2025-09-21 Accepted:2025-11-12 Online:2025-12-01 Published:2025-12-05
  • Contact: XU Yunhua,E-mail:yunhua.xu@tju.edu.cn E-mail:yunhua.xu@tju.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No. 22179092).

Abstract: Ternary transition metal oxide cathode materials have been widely utilized in high-performance power applications due to their high energy density. However, their poor thermal stability and limited cycle life pose significant challenges to broader commercialization. To address these issues, a surface modification strategy was developed by coating the cathode materials with the fast ionic conductor Li1.3Al0.3Ti1.7(PO4)3 (LATP). The LATP-coated cathode materials are synthesized via a kilogram-scale process, enabling large-scale and cost-effective manufacturing. The LATP-coated cathodes demonstrate enhanced reaction kinetics, thermal decomposition temperatures, and surface stability, leading to higher reversible capacity, rate performance, and cycling stability. Furthermore, 60 A·h pouch cells are fabricated with the coated cathodes and demonstrate exceptional cycling performance, retaining 96.2% of their capacity after 700 cycles at 1 C, and maintaining high capacity at 3 C. This work offers a scalable and effective strategy for advancing high-performance ternary cathode materials, accelerating their deployment in next-generation power battery systems.

Key words: Ternary cathode material, Solid electrolyte, Li1.3Al0.3Ti1.7(PO4)3 (LATP), Surface coating, Power battery