Abstract
Spinel LiMn2O4 is a low-cost, eco-friendly, and highly abundant cathode materials for Liion battery, however it has a drastic capacity loss with cycling due to the distortion in crystal structure during discharge. In order to overcome the capacity loss, Mg-doped manganese oxide was synthesised and investigated in order to have a structure with suppressed Jahn- Teller distortion. The distorted Li- Mg-Mn complex has potential merit for lithium ion battery cathode. To fulfil this objective, oxides of Mg and Mn were prepared in different compositions. The synthesized compounds are found to consist of MgMn2O4 as a major phase along with a minor fraction of Mg6MnO8. Lithium insertion was carried out by adding Li2CO3 in appropriate proportion to MgMnO mixture in order to form a single phase LiMgMnO complex. The LiMgMnO complex as a cathode material was successfully demonstrated in a coin cell.
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