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Phase Equilibria in the Li2O–Al2O3–Ni–Co–O System

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Abstract—

This paper presents a topological analysis of phase equilibria in the Li2O–Al2O3–Ni–Co–O system. Using the fragmentary experimental data available, we construct isothermal phase diagrams of the Li2O–Al2O3–Nc–O (Nc = Ni + Co) and Li2O–Al2O3–NiO1 + x–CoO1 + x (0 ≤ x < 1) systems. Data are presented on phase equilibria involving Li(Ni,Co,Al)O2 (α-NaFeO2 structure), (Li,Ni,Co,Al)Al2O4 (spinel structure), (Li,Ni,Co)O (rock-salt structure), and (Li,Ni,Co)3O4 (spinel structure) solid solutions, whose homogeneity regions are evaluated.

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Funding

This work was supported by the Russian Federation Ministry of Science and Higher Education: state research target for the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences; basic research.

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Correspondence to G. D. Nipan.

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Translated by O. Tsarev

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Nipan, G.D., Kornilov, D.Y. Phase Equilibria in the Li2O–Al2O3–Ni–Co–O System. Inorg Mater 56, 809–814 (2020). https://doi.org/10.1134/S0020168520070110

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