Copolymerization-Assisted Preparation of Porous LiMn_2O_4 Hollow Microspheres as High Power Cathode of Lithium-ion Batteries

作     者：Zhimin Zou Zhaojin Li Hui Zhang Xiaohui Wang Chunhai Jiang 

作者机构：Fujian Provincial Key Laboratory of Functional Materials and Applications Institute of Advanced Energy Materials School of Materials Science and Engineering Xiamen University of Technology Institute of Metal Research Chinese Academy of Sciences 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2017年第33卷第8期

页      面：781-787页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by Natural Science Foundation of Fujian Province (2016J01746 and 2016H0038) "Minjiang Scholarship" program (60815002) the start-up fund of XMUT (E2015027 and E2016005) 

主　　题：Li-ion batteries Cathode LiMn2O4 Hollow spheres Rate capability 

摘      要：Porous LiMn2O4 hollow microspheres were facilely prepared by incorporation of Li and Mn elements into a spherical polymeric precursor through copolymerization of lithium and manganese acetates with resorcinol and hexamethylenetetramine and then burning off the organic matrix at appropriate temperatures in air. The LiMn2O4 inherited the spherical morphology of the polymeric precursor but showed hollow porous structure assembled by nanocrystals of about 50–100 nm in size. When tested as cathode of Li-ion batteries, the LiMn2O4 hollow spheres exhibited excellent rate capability and cycle stability.A discharge capacity of above 90 mAh g-1was maintained at 10 C（1C = 120 mAg-1）, and the cells can still deliver a discharge capacity over 100 mAhg-1after another 115 cycles at 0.5 C. With such excellent electrochemical properties, the prepared LiMn2O4 hollow microspheres could be promising cathode of Li-ion batteries for long term and high power applications.