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Solid Solution Li(Ni,Mn,Co,Fe)O2 Homogeneity Range
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DOI：10.1007/s11669-019-00758-4.png)
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Abstract
En 中文
By the combustion of the starch-based gel the two series of the nominal composition samples were synthesize: Li1.1Co1-x(Ni0.33Mn0.33Fe0.33)(x)O-2 (0 <= x <= 1) and Li1.1Ni1-x(Mn0.33Co0.33Fe0.33)(x)O-2 (0 <= x <= 1). The estimation of the homogeneity range's extension of the type -NaFeO2 layered solid solution Li(Ni,Mn,Co,Fe)O-2 was based on the results of the x-ray phase analysis of the obtained samples. It was found that the solid solution was continuous at the Li1+gamma CoO2-Li1+gamma Ni0.33Mn0.33Fe0.33O2 conode and limited at the Li1+yNiO2-Li1+gamma Mn0.33Co0.33Fe0.33O2 conode. Within the isobaric-isothermal tetrahedron Li1+yNiO2-Li1+yMnO2-Li1+yCoO2-Li1+yFeO2, the position of the stable range of the solid solution Li(Ni,Mn,Co,Fe)O-2 is shown by the Li1+yCoO2-Li1+yNi0.5Mn0.5O2-Li1+yFeO2 and Li1+yNiO2-Li1+yMn0.5Co0.5O2-Li1+yFeO2 sections.
Keywords:
gel combustion
Li-ion battery materials
solid solution Li(Ni
Mn
Co
Fe)O-2
x-ray method
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