Li Xiangnan, Cao Zhaoxia, Dong Hongyu, Shi Zhenpu, Zhang Huishuang, Li Junyi, Yang Shuaijia, Yang Shuting
School of Physics, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
National and Local Joint Engineering Laboratory of Motive Power and Key Materials Xinxiang Henan 453007 China.
RSC Adv. 2020 Jan 17;10(6):3166-3174. doi: 10.1039/c9ra09206d. eCollection 2020 Jan 16.
Constructing uniform nanoceramic coating layers is a well-known challenge in the field of coating materials. Herein, AlO-coated Li[LiNiMn]O (LLNM) Li-rich cathode materials are successfully prepared through a dry prilling coating (DPC) method. The structures and electrochemical performances of the AlO-coated products are systematically examined. Typically, the cycling stability is enhanced and voltage degradation upon cycling is reduced, benefiting from the unique and controllable nano-sized AlO coating layer. Moreover, metal ion dissolution is avoided when using the DPC method, which is eco-friendly and suitable for large scale production.
构建均匀的纳米陶瓷涂层是涂层材料领域中一个众所周知的挑战。在此，通过干喷雾造粒涂层（DPC）方法成功制备了AlO包覆的Li[LiNiMn]O（LLNM）富锂正极材料。系统地研究了AlO包覆产物的结构和电化学性能。通常，得益于独特且可控的纳米尺寸AlO涂层，循环稳定性得到增强，循环过程中的电压降解降低。此外，使用DPC方法可避免金属离子溶解，该方法环保且适合大规模生产。
