Magnéli 相亚氧化钛（分子式为TinO2n-1（3<n<10））是一种新型高导电材料，其物化性能随亚氧态(n值)明显地发生变化。如何精准调控亚氧态非常重要，然而传统还原法因受热力学和动力学等方面的限制难以对亚氧态进行精准调控，所得产物为亚氧化钛的混合物。我们前期研究发现不同价态钛源配比对亚氧态（n值）会产生显著影响，甚至可制得单相高纯亚氧化钛（如Ti4O7、Ti5O9），因此推测不同价态钛源可通过微观混合和反应结晶形成特定成分的前驱体，进而达到对亚氧态（n值）的调控。本研究以TiCl4和TiCl3溶液为钛源，通过成分设计合成新方法制备Magnéli 相亚氧化钛，系统考察工艺条件对前驱体和亚氧化钛的成分、微结构的影响，揭示钛源配比对亚氧态的调控机制，探索亚氧化钛的成分、结构与性能之间的关联性，从而为高性能Magnéli相亚氧化钛的创新制备和实际应用等开阔研究思路和提供理论依据。

Magnéli phase titanium sub-oxides (MPTSOs) were identified as a distinct series of conductive materials having the general formula TinO2n-1 where 3<n<10 and the physical and chemical properties of which change obviously with the sub-oxygen state (n value). It is particularly important to accurately control the sub-oxygen state (n value) for the properties of MPTSOs. However, the traditional reduction method is difficult to accurately control the sub-oxygen state due to thermodynamic and kinetic constraints, and so the mixture of titanium sub-oxides would be usually obtained by the traditional methods. Our previous research indicated that the original ratio of titanium with different valence states has a significant effect on the sub-oxygen state (n value) and even titanium sub-oxide with high-purity and single-phase (such as Ti4O7 and Ti5O9) could be prepared at the proper ratio of the different titanium sources by a new method. Therefore, it is speculated that the specific precursors can be obtained from titanium sources with different valence states through micro-mixing and reactive crystallization and further to regulate the sub-oxygen state (n value). In our study, MPTSOs would be prepared by an innovative method of composition design taking the solutions of TiCl4 and TiCl3 as the titanium sources, and the effects of titanium ratio and other factors on the composition and microstructure of titanium sub-oxide would be investigated systematically. Meanwhile, the regulatory mechanism of titanium ratio on sub-oxide state (n value) would be revealed and the correlation between composition, structure and properties of titanium sub-oxide would be also explored. Thereby, the research above would broaden research ideas and provide theoretical basis for the innovative preparation and potential application of MPTSOs.