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Abstract <p>Precursors of composition Ni<sub>1–2<i>х</i></sub>Mn<sub><i>х</i></sub>Co<sub><i>х</i></sub>O<sub><i>y</i></sub>, where <i>x</i> = 0–0.5, have been prepared by solution combustion synthesis. The phase composition of precursors have been confirmed by X-ray powder diffraction. Samples morphology has been studied by scanning electron microscopy in combination with energy-dispersive analysis. Change in the phase composition of precursors of mixed <i>d</i>-metal oxides depending on synthesis conditions and annealing temperatures has been studied. NiO, Ni, and MnCo<sub>2</sub>O<sub>4</sub> content in Ni<sub>1–2<i>х</i></sub>Mn<sub><i>х</i></sub>Co<sub><i>х</i></sub>O<sub><i>y</i></sub> precursors composition after solution combustion synthesis <b>(</b>SCS) and after 550°C have been studied. Dependence of parameter <i>a</i> of crystal lattice of spinel phase on the composition of sample after annealing at 550, 800, and 900°C has been determined. Precursor Ni<sub>1–2<i>х</i></sub>Mn<sub><i>х</i></sub>Co<sub><i>х</i></sub>O<sub><i>y</i></sub> (<i>x</i> = 0.1–0.333) is monophase after annealing at 550°C.</p>

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Phase Composition of Ni1–2хMnхCoхOy Precursors, where x = 0–0.5, Obtained by Solution Combustion Synthesis

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • K. V. Nefedova,
  • L. V. Ermakova,
  • V. D. Zhuravlev,
  • T. A. Patrusheva

摘要

Abstract

Precursors of composition Ni1–2хMnхCoхOy, where x = 0–0.5, have been prepared by solution combustion synthesis. The phase composition of precursors have been confirmed by X-ray powder diffraction. Samples morphology has been studied by scanning electron microscopy in combination with energy-dispersive analysis. Change in the phase composition of precursors of mixed d-metal oxides depending on synthesis conditions and annealing temperatures has been studied. NiO, Ni, and MnCo2O4 content in Ni1–2хMnхCoхOy precursors composition after solution combustion synthesis (SCS) and after 550°C have been studied. Dependence of parameter a of crystal lattice of spinel phase on the composition of sample after annealing at 550, 800, and 900°C has been determined. Precursor Ni1–2хMnхCoхOy (x = 0.1–0.333) is monophase after annealing at 550°C.