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Structural and Electrochemical Analysis of Iron Doping in LiNi_0.6-x Mn_0.2 Co_0.2 Fe_x O_2 battery

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概要 Doping in Li-ion Battery cathode material has become an interesting subject around the world. LiNi_0.6 Mn_0.2 Co_0.2 O_2 is a high energy density cathode material. According to its ability to form par...ticles with a high degree of atomic homogeneity, the co-precipitation method was chosen for the synthesis of the material LiNi_0.55 Mn_0.2 Co_0.2 Fe_0.05 O_2 (Fe-doped NMC622). In this study, Fe was used as a doping agent because of their high-energy metal oxygen bond dissociation, Oxalic acid is used as precipitant, while ammonia is used as chelating agent. Under the air stream, the oxalate precursor obtained was sintered. The characterization of the Fe-doped NMC622 is performed. Hexagonal-layered material structure shown in x-ray diffraction patterns. XRF analysis confirmed the composition of the final product. SEM (scanning electron microscope) study displayed the material's morphology. The electrochemical performance was achieved by a charge-discharge test at 1/10 C between 2-4.8 V. The Fe doped NMC622 exhibited enhancing cycle efficiency and structural characteristic compared to the un-doped NMC622.続きを見る

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登録日 2021.04.02
更新日 2021.05.07

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