| Issue |
MATEC Web Conf.
Volume 175, 2018
2018 International Forum on Construction, Aviation and Environmental Engineering-Internet of Things (IFCAE-IOT 2018)
|
|
|---|---|---|
| Article Number | 01030 | |
| Number of page(s) | 4 | |
| Section | Construction Materials | |
| DOI | https://doi.org/10.1051/matecconf/201817501030 | |
| Published online | 02 July 2018 | |
Improved electrochemical performance of 5 V spinel LiNi0.5Mn1.5O4 by La2O3 surface coating for Li-ion batteries
1
Institute of Energy Resources, Hebei Academy of Science, Shijiazhuang Hebei 050081, China
2
Hebei Engineering Research Center for Water Saving in Industry, Shijiazhuang Hebei 050081, China
* Corresponding author: lzf63@sohu.com
LiNi0.5Mn1.5O4 coated with 1.5 wt.% La2O3 was prepared and investigated as cathode materials for lithium ion batteries. The samples was characterized by XRD, SEM and EDX. After the 1.5 wt.% La2O3 coating, the lattice structure of LiNi0.5Mn1.5O4 is not destroyed and a La2O3 coating layer has formed on the surface of LiNi0.5Mn1.5O4 particles. The 1.5 wt.% La2O3-coated LiNi0.5Mn1.5O4 exhibits a higher rate capacity, with discharge capacity between 3.5 and 5 V of 131.9, 127.1, 126.5, 120.7, 114.1 and 101.5 mAh g-1 at rates of 0.2, 0.5, 1, 2, 3 and 5 C (1 C = 140 mAh g-1), respectively. The results indicate that the La2O3 coating could reduce the electrode polarization and enhance the rate capacities.
© The Authors, published by EDP Sciences 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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