American Journal of Engineering and Applied Sciences

Preparation of LiCoMnO4 Assisted by Hydrothermal Approach and its Electrochemical Performance

Meilin You, Xingkang Huang, Min Lin, Qingsong Tong, Xiuhua Li, Ying Ruan and Yong Yang

DOI : 10.3844/ajeassp.2016.396.405

American Journal of Engineering and Applied Sciences

Volume 9, Issue 2

Pages 396-405

Abstract

LiCoMnO4 materials have been synthesized via a hydrothermal approach followed by a post-annealing process. Pure phase of LiCoMnO4 is unable to form under hydrothermal conditions; however, high quality of pure LiCoMnO4 was achieved after annealing the hydrothermal products. The concentration of LiOH and the post-annealing temperature are the crucial factors to form LiCoMnO4. Without post-annealing process, the highest contents of LiCoMnO4 in the hydrothermal products are less than 50% (e.g., in the presence of 1.2-1.35 M LiOH); in contrast, in the cases of 1.35-1.4 M LiOH, almost pure phase of LiCoMnO4 has been achieved successfully after annealing the hydrothermal precursors at 750°C. The as-prepared sample in the presence of 1.35 M LiOH, after annealed at 750°C, exhibits a capacity of 91.6 mAh g-1.

Copyright

© 2016 Meilin You, Xingkang Huang, Min Lin, Qingsong Tong, Xiuhua Li, Ying Ruan and Yong Yang. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.