文献类型：期刊文献

英文题名：Synergistic Enhancement Effect of Al Doping and Highly Active Facets of LiMn2O4 Cathode Materials for Lithium-Ion Batteries

作者：Fu, Yao[1];Jiang, Hao[1];Hu, Yanjie[1];Dai, Yihui[1];Zhang, Ling[1];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2015

卷号：54

期号：15

起止页码：3800

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20151800801608);WOS:【SCI-EXPANDED(收录号:WOS:000353929300008)】；

基金：This work was supported by the National Natural Science Foundation of China (21206043, 21236003, and 21322607), the Research Project of the Chinese Ministry of Education (113026A), the Shanghai Shuguang Scholars Program (13SG31), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Cathodes - Manganese compounds - Lithium-ion batteries - Aluminum - Electrolytes

摘要：To overcome the poor cycling stability of LiMn2O4 cathode materials without sacrificing the specific capacity, we demonstrate anew strategy for synergistically enhancing,their electrochemical performance by combining the advantages of Al doping and the exposure Of highly active facets. Specifically, Al doping can suppress Mn dissolution in the electrolyte, leading to an outstanding cycling stability. In addition, the exposure of highly active facets Can greatly enhance the specific capacity and rate capability, while also compensating for the capacity loss caused by Al doping. As a consequence, the as-prepared Al-doped LiMn2O4 truncated octahedrons exhibit a far superior performance in both rate capacity and cycling :stability than the pure LiMn2O4 octahedrons and the LiMn2O4, truncated octahedrons. Our work is meaningful not only for the Synthesis of high-performance LiAl0.1Mn1.9O4 truncated octahedrons, but also for providing new insight into the, development of high-performance LiMn2O4 cathode materials.