以醋酸钠、乙酰丙酮钒为原料，四甘醇/乙二醇为溶剂、燃料和碳源，Ni₂P为镍源，采用多元醇快速热解合成法制备Na₃V₂（PO₄）₃-Ni₂P/C （NVP-NP/C）复合材料。FT-IR、XRD、和DSL对NVP-NP/C的组成和微观结构进行表征。结果表明，多元醇的快速热解有效地促进了NVP-NP的成核并抑制其继续生长，同时多元醇的完全燃烧消除制备过程引入的杂质并在产品表面形成了均匀碳包覆层。NVP-NP/C产品呈球形，直径约为50 nm，颗粒间呈轻微的聚集，聚集体平均粒径为121.6 nm，分布均匀，碳质量分数为8.77%。高结晶度形貌规整的Na₃V₂（PO₄）₃-Ni₂P纳米复合材料可以改善钠离子扩散能力，而多元醇热解碳所形成的包覆层可有效提高复合材料的导电性。

Na₃V₂(PO₄)₃-Ni₂P/C(NVP-NP/C) nanocomposite is prepared via the polyol-based pyrolysis method with sodium acetate and vanadyl acetylacetonate as raw materials,tetraglycol,and ethylene glycol as solvent,fuel and carbon source,and Ni₂P as nickel source.The obtained nanocomposite is characterized by FT-IR,XRD,SEM and DSL.The results show that the rapid pyrolysis of tetraglycol and ethylene glycol facilitates the fast nucleation of NVP-NP/C and suppresses the particles' growth,leading to the formation of highly crystalline particles.TEM and DSL analysis confirms that the obtained particles show a spherical shape with a diameter of about 50 nm.There is slight aggregation between particles.The average particle size of aggregate is 121.6 nm,distributing uniformly.The composite particles are well coated by carbon with a carbon content of 8.77%.The NVP-NP/C composite with a high crystalline and a regular morphology can improve the diffusibility of Na ions,while the carbon coated layer accomplished by polyol combustion can effectively enhance the electrical conductivity of the composite.

陈宇(1993-),男,硕士研究生,研究方向为精细化工,775458195@qq.com