Nanocrystalline LiNi0.4Mn0.4Co0.2O2 cathode for lithium-ion batteries
Nanocrystalline LiNi0.4Mn0.4Co0.2O2 cathode for lithium-ion batteries
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DOI：
10.1016/j.colsurfa.2014.03.096
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发表时间：
2014-07
期刊：
影响因子：
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通讯作者：
V. S. Channu;D. Ravichandran;B. Rambabu;R. Holze
中科院分区：
文献类型：
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作者：
V. S. Channu;D. Ravichandran;B. Rambabu;R. Holze
在不使用和使用螯合剂（草酸和柠檬酸）的情况下合成了镍锰钴酸锂（LiNi0.4Mn0.4Co0.2O2），并通过X射线粉末衍射、热重分析、磁测量、扫描电子显微镜和透射电子显微镜进行了表征。结构结果表明，除了Li2MnO3 杂质外，颗粒以与α-NaFeO2 结构相似的R3−结构对称性结晶为单相。研究了这些化合物作为二次锂离子电池的正极材料，并报告了放电曲线。草酸辅助的LiNi0.4Mn0.4Co0.2O2正极比简单的LiNi0.4Mn0.4Co0.2O2和柠檬酸辅助的LiNi0.4Mn0.4Co0.2O2具有更高的比容量。
Lithium nickel manganese cobalt oxide (LiNi0.4Mn0.4Co0.2O2) was synthesized without and with using chelating (oxalic acid and citric acid) agents and characterized by X-ray powder diffraction, thermal gravimetry, magnetic measurements, scanning electron microscopy and transmission electron microscopy. Structural results showed that particles crystallized in theR3−mstructural symmetry similar to the α-NaFeO2structure as a single phase except Li2MnO3impurity. The compounds were investigated as positive electrode materials in secondary lithium ion batteries, discharge profiles are reported. Oxalic acid assisted LiNi0.4Mn0.4Co0.2O2cathode has higher specific capacity than simple LiNi0.4Mn0.4Co0.2O2and citric acid assisted LiNi0.4Mn0.4Co0.2O2.