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A series of LiNi1/3Co1/3Mn1/3O2/LiFePO4 composite cathodes with the LiFePO4 mass content ranging from 10 to 30 wt% were prepared by ball milling in order to combine the merits of layered LiNi1/3Co1/3Mn1/3O2 and olivine LiFePO4. The structure and morphology of the samples were characterized by X-ray diffraction and scanning electron microscope. The composite cathodes exhibited improved electrochemical...
The electrochemical properties of Li[Li 0.2 Co 0.4 Mn 0.4 ]O 2 were studied at room temperature and −20°C. EIS study showed that the electrochemical kinetics of the first charge was more sluggish than subsequent cycles, which became even worse at −20°C. This made it difficult for the material to achieve a sufficient oxygen loss reaction at low temperature. XPS analysis...
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