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首页> 外文期刊>Nanotechnology >A novel polyaspartate precursor method for the synthesis of LiCayMn2-yO4 nanoparticles for Li-ion batteries
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A novel polyaspartate precursor method for the synthesis of LiCayMn2-yO4 nanoparticles for Li-ion batteries

机译：一种新型的天冬氨酸前体方法，用于合成锂离子电池LiCayMn2-yO4纳米粒子

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摘要

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 degrees 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 LiCayMn(2-y)O(4) as the cathode with microporous polymer electrolyte.
机译：以Li +，Ca2 +的硝酸盐和Mn2 +的乙酸盐与天冬氨酸为可聚合燃烧燃料合成了立方尖晶石LiCayMn2-yO4纳米颗粒。将它们溶解在蒸馏水中，然后通过加热浓缩以形成粘稠的树脂，通过在120℃下干燥将其转变成泡沫状物质。通过燃烧这些泡沫而获得相纯的LiCayMn2-yO4粉末。通过TG / DTA分析研究了聚天冬氨酸前体的分解温度。通过X射线衍射研究证实了合成的LiCayMn2-yO4粉末的结构性质。合成粉末的平均粒径使用谢勒方程由X射线数据计算。还进行了TEM分析以确认合成的LiCayMn2-yO4粉末的粒径和表面形态。最后，通过使用微孔聚合物电解质组装2016型电化学纽扣电池，以碳为阳极，并以合成的LiCayMn（2-y）O（4）为阴极，进行了电化学充放电研究。

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