Aerosol construction of multi-shelled LiMn2O4 hollow microspheres as a cathode in lithium ion batteries

作者：Niu, Xiaofeng; Li, Yunfeng; Hu, Yanjie^*; Jiang, Hao; Hou, Xiaoyu; Li, Wenge; Qiu, Shengjie; Li, Chunzhong^*

来源：New Journal of Chemistry, 2016, 40(2): 1839-1844.

DOI：10.1039/c5nj02501j

• HIGH-PERFORMANCE
• ELECTROCHEMICAL PERFORMANCE
• FACILE SYNTHESIS
• ANODE MATERIALS
• POWDERS

Advanced cathode materials with optimal balanced pore structures and tap densities have attracted much attention for use the of next generation lithium ion batteries (LIBs). Herein, multi-shelled LiMn2O4 hollow microspheres (named ms-LMO HMs) have been successfully prepared by a facile aerosol spray pyrolysis route through the controlled combustion of carbon species. The obtained microspheres, with diameters of 0.5-2 mu m, are assembled from nanosized LiMn2O4 particles (10-30 nm) and exhibit intriguing hollow structures with multishells. When used as cathode materials in LIBs, ms-LMO HMs show a superior specific capacity of 110 mA h g(-1) with 400 cycles at 0.2 A g(-1), as well as a good rate capacity. This is mainly owing to the multilevel voids, porous internal/external shells and nanosized particles for facile wetting of the electrode and electrolyte and a facilitated Li+ ion diffusion pathway.

• 出版日期2016
• 单位上海市纳米科技与产业发展促进中心; 华东理工大学