Cubic spinel LiCayMn2−yO4 nanoparticles were synthesized using nitrates of Li+, Ca2+ and acetate of Mn2+ with aspartic acid as a polymerizable combustion fuel. They were dissolved in distilled water and then concentrated by heating to form a viscous resin which was transformed into a foam-like mass by drying at 120 °C. Phase pure LiCayMn2−yO4 powders were obtained by combustion of these foams. The decomposition temperature of the polyaspartate precursor was investigated by TG/DTA analysis. The structural property of the synthesized LiCayMn2−yO4 powders was confirmed by x-ray diffraction studies. The average particle size of the synthesized powders was calculated from the x-ray data using the Scherrer equation. TEM analysis was also carried out to confirm the particle size and surface morphology of the synthesized LiCayMn2−yO4 powder. Finally, electrochemical charge–discharge studies were carried out by assembling 2016 type electrochemical button cells using carbon as the anode and the synthesized LiCayMn2−yO4 as the cathode with microporous polymer electrolyte.
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