We report the effect of the sintering temperature on the structure and valence states of Ru–Mn in Li₂Mn_0.9Ru_0.1O₃. These effects are explored by synchrotron X-ray diffraction patterns, Raman and X-ray absorption spectroscopy spectra (analysis of the Ru–M₄, Mn–L_2,3, and O–K edges). Ru doping at the Mn site in Li₂MnO₃ changes the lattice parameters of the parent Li₂MnO₃. Li₂Mn_0.9Ru_0.1O₃ sintered at 950^oC shows two peaks of the Ru–M₄ absorption edge. These peaks confirm the presence of mixed valence states Ru⁺⁴ and Ru⁺⁵. The compound Li₂Mn_0.9Ru_0.1O₃ sintered at 1050^oC shows only one peak of the Ru–M₄ absorption edge, which reveals the presence of the Ru⁺⁴ valence state. The Mn–L₃ absorption edge of Li₂Mn_0.9Ru_0.1O₃ shifts towards lower energy in comparison to the absorption edge of Li₂MnO₃. The O–K absorption edge of Li₂Mn_0.9Ru_0.1O₃ shows the origin of a new peak in comparison to the absorption edge of Li₂MnO₃ due to the presence of Mn⁺³–O hybridization in Li₂Mn_0.9Ru_0.1O₃ sintered at 950^oC. The Raman spectrum of Li₂Mn_0.9Ru_0.1O₃ shows splitting and peak shifting with the change in the sintering conditions. The presence of mixed valences Mn⁺³, Mn⁺⁴, Ru⁺⁴, and Ru⁺⁵ in the lattice of Li₂Mn_0.9Ru_0.1O₃ sintered at 950^oC may affect the charge–discharge properties of the Li₂Mn_0.9Ru_0.1O₃ cathode.

我们报告了烧结温度对 Li ₂ Mn _0.9 Ru _0.1 O ₃中 Ru-Mn 结构和价态的影响。这些效应通过同步加速器 X 射线衍射图、拉曼和 X 射线吸收光谱（对 Ru-M ₄、Mn-L _2,3和 O-K 边缘的分析）进行了探索。在 Li ₂ MnO ₃的 Mn 位点掺杂 Ru改变了母体 Li ₂ MnO ₃的晶格参数。在 950 ^o C 下烧结的Li ₂ Mn _0.9 Ru _0.1 O ₃显示出两个 Ru-M ₄峰吸收边。这些峰证实了混合价态 Ru ⁺⁴和 Ru ^{+5 的存在}。在 1050 ^o C 下烧结的化合物 Li ₂ Mn _0.9 Ru _0.1 O ₃仅显示一个 Ru-M ₄吸收边峰，这表明存在 Ru ⁺⁴价态。与Li ₂ MnO ₃的吸收边缘相比，Li ₂ Mn _0.9 Ru _0.1 O ₃的Mn-L ₃吸收边缘向较低能量移动。Li ₂ Mn的O-K吸收边由于在 950 ^o C 下烧结的Li ₂ Mn _0.9 Ru _0.1 O _{3 中}存在 Mn ⁺³ -O 杂化，_0.9 Ru _0.1 O ₃显示了与 Li ₂ MnO ₃的吸收边缘相比的新峰的起源。 Li ₂ Mn _0.9 Ru _0.1 O _{3 的}拉曼光谱显示出随着烧结条件的变化而发生分裂和峰移。混合价Mn ⁺³、Mn ⁺⁴、Ru ⁺⁴和Ru ^{+5 的存在}在950 ^o C烧结的 Li ₂ Mn _0.9 Ru _0.1 O ₃的晶格中，可能会影响 Li ₂ Mn _0.9 Ru _0.1 O ₃正极的充放电性能。