Synthesis of the spinel LiNi0.5Mn1.5O4 as 5V cathode material by carbonate co-precipitation method

DOI

10.2991/mmeceb-15.2016.34How to use a DOI?

Keywords

lithium-ion batteries, spinel, LiNi0.5Mn1.5O4, carbonate co-precipitation method

Abstract

LiNi0.5Mn1.5O4 has been synthesized by carbonate co-precipitation method in which we got the precursor that was pretreated with H2O2 (an oxidant), in order to oxidize part of Mn2+ to Mn4+,results in a decrease of Mn3+ in the structure. Result in the average valence of Mn is approximately 4 in the LiNi0.5Mn1.5O4 structure, leading to an improved structural stability. The sample was characterized by XRD (X-ray diffraction) and SEM (Scanning Electron Microscope) test, respectively. The XRD results show that peaks of the sample are consistent with that of standard LiNi0.5Mn1.5O4.The SEM pattern shows that there are complete octahedron exists, the result indicate that material structure is an intact spinel structure. In addition, electrochemical properties have been tested. The first discharge capacity is 100.8mAh g-1 at 0.25 C. And cycling performance was tested, it is also preferable.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Shiyou Li
AU  - Shan Geng
PY  - 2015/12
DA  - 2015/12
TI  - Synthesis of the spinel LiNi0.5Mn1.5O4 as 5V cathode material by carbonate co-precipitation method
BT  - Proceedings of the 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnology
PB  - Atlantis Press
SP  - 163
EP  - 166
SN  - 2352-5401
UR  - https://doi.org/10.2991/mmeceb-15.2016.34
DO  - 10.2991/mmeceb-15.2016.34
ID  - Li2015/12
ER  -