Abstract

Samples of as-batch composition Li_1.1Mn_{1 – x}(Ni_0.33Co_0.33Fe_0.33)_xO₂ (0 ≤ х ≤ 1) prepared by starch-based gel combustion were characterized by X-ray powder diffraction (XRD). A homogeneous sample of composition Li_1.1Ni_0.27Mn_0.20Co_0.27Fe_0.27O₂ having the α-NaFeO₂ structure was prepared. XRD data were used to estimate the extent of the solid solutions having the α-NaFeO₂ structure along the concentration medians of the Li_{1 + y}NiO₂–Li_{1 + y}MnO₂–Li_{1 + y}CoO₂–Li_{1 + y}FeO₂ isobaric–isothermal tetrahedron. The continuity of Li(Ni,Mn,Co,Fe)O₂ solid solutions for the Li_{1 + y}CoO₂–Li_{1 + y} Ni_0.33Mn_0.33Fe_0.33O₂ tie-line, their limited character for the Li_{1 + y}NiO₂–Li_{1 + y} Mn_0.33Co_0.33Fe_0.33O₂ tie-line, and a narrow homogeneity range for the Li_{1 + y}MnO₂–Li_{1 + y}Ni_0.33Co_0.33Fe_0.33O₂ tie-line were shown. The variation of Li(Ni,Mn,Co,Fe)O₂ unit cell parameters was analyzed as dependent on the cationic composition. Li_1.1Ni_0.10Mn_0.10Co_0.70Fe_0.10O₂, Li_1.1Ni_0.70Mn_0.10Co_0.10Fe_0.10O₂, and Li_1.1Ni_0.60Mn_0.13Co_0.13Fe_0.13O₂ were tested as lithium-ion battery cathodes.

中文翻译：

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Li 1 + y CoO 2 –Li 1 + y MnO 2 –Li 1 + y NiO 2 –Li 1 + y FeO 2体系中具有α-NaFeO2结构的固溶体

摘要

通过X射线粉末衍射（XRD）表征通过淀粉基凝胶燃烧制备的分批组成Li _1.1 Mn _{1 -x}（Ni _0.33 Co _0.33 Fe _0.33）_x O ₂（0≤х≤1）的样品。的组成为Li的均匀样品_1.1的Ni _0.27锰_0.20钴_0.27铁_0.27 Ò ₂具有α-NaFeO ₂制备结构。XRD数据被用来估计具有固体溶液的程度α-NaFeO ₂沿Li _{1 + y} NiO ₂ -Li _{1 + y} MnO ₂ -Li _{1 + y} CoO ₂ -Li _{1 + y} FeO ₂等压-等温四面体的浓度中位数的结构。Li _{1 + y} CoO ₂ –Li _{1 + y} Ni _0.33 Mn _0.33 Fe _0.33 O ₂连接线的Li（Ni，Mn，Co，Fe）O ₂固溶体的连续性，对于Li _{1 + y} NiO ₂ –Li_{显示了1 + y} Mn _0.33 Co _0.33 Fe _0.33 O ₂连接线，以及Li _{1 + y} MnO ₂ -Li _{1 + y} Ni _0.33 Co _0.33 Fe _0.33 O ₂连接线的均一性范围狭窄。Li（Ni，Mn，Co，Fe）O ₂晶胞参数的变化取决于阳离子组成。Li _1.1 Ni _0.10 Mn _0.10 Co _0.70 Fe _0.10 O ₂，Li _1.1 Ni_{测试了0.70} Mn _0.10 Co _0.10 Fe _0.10 O ₂和Li _1.1 Ni _0.60 Mn _0.13 Co _0.13 Fe _0.13 O ₂作为锂离子电池正极。