Abstract
Samples with general formula LiMn
2−
x
Y
x
O
4 (where
x = 0.025, 0.05 mol) were successfully synthesized through thermal decomposition of LiMnC
2O
4 (OAc) precursor, whereas LiMnC
2O
4 (OAc) precursor was synthesized by the room temperature solid state reaction. The structural, micro-structural and electrochemical features of pure spinel and yttrium-doped samples were investigated. XRD-analysis indicated that all of the prepared samples mainly belong to cubic crystal form with Fd3m space group. Only Y
2O
3 begins to appear as secondary impurity phase with maximum doping ratio
x = 0.05 mol in minor. The electrochemical investigations included cyclic voltammetry, charge–discharge cycling of coin model cells were performed and indicated that substituted spinel with
x = 0.025 mol (LiMn
1.975Y
0.025O
4) exhibits best experimental discharge capacity. Visualization studies were also incorporated to prove crystal structure of Y-doped spinel.
[Display omitted]