Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10624994 | Ceramics International | 2014 | 21 Pages |
Abstract
Truncated octahedral LiMn2O4 nanoparticles were prepared by a high temperature solid-state combustion reaction using starch as fuel. The structure and morphology of the as-prepared material were analyzed by X-ray diffraction and electron microscopy. The results obtained show that the materials possess a perfect spinel structure, truncated octahedral morphology with an average grain size about 101.8 nm and uniform particle size distribution. The truncated octahedral LiMn2O4 exhibits high capacity and long-term cyclability with an initial discharge capacity of 107.9 mAh g-1 at 5 C. The capacity retention is 91.39% after 1000 cycles at 20 C. The excellent electrochemical performance can be mainly attributed to the nano-sized truncated octahedral structure, narrow particle size distribution and relatively lower crystallinity.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yanjun Cai, Yudai Huang, Xingchao Wang, Dianzeng Jia, Xincun Tang,