【摘要】 采用喷雾干燥法制备了Zr⁴⁺掺杂的空心球状磷酸钒钠（Na₃V₂（PO₄）₃）正极材料，探讨了Zr⁴⁺掺杂量(n(Zr⁴⁺)/n(Na_3-xV_2-xZr_x（PO₄）₃))对材料性能的影响；通过X射线衍射（XRD）、扫描电子显微镜（SEM）及原位XRD等手段分析了Zr⁴⁺掺杂对材料结构及电化学性能的影响。结果表明，Zr⁴⁺掺杂增强了材料的结构稳定性，有效抑制了循环过程中的结构坍塌和体积膨胀；当Zr⁴⁺掺杂量为0.15时，Na_2.85V_1.85Zr_0.15（PO₄）₃在15.0 C倍率下的放电比容量为76.5 m A·h/g，在10.0 C倍率下经过800次循环后容量保持率高达80.6%。更多还原

【Abstract】 Zr⁴⁺-doped hollow spherical Na₃V₂（PO₄）₃ cathode material was prepared by spray drying method,and the influence of different Zr⁴⁺doping levels (molar ratio of Zr⁴⁺to Na_3-xV_2-xZr_x（PO₄）₃) on the material properties was investigated.Techniques such as X-ray diffraction （XRD）,scanning electron microscopy （SEM）,and in-situ XRD were used to analyze the effects of Zr⁴⁺doping on the structure and electrochemical performance of the material.It can be observed that Zr⁴⁺doping enhanced the structural stability of the material,effectively inhibiting structural collapse and volume expansion during cycling.When the Zr⁴⁺doping level was 0.15,Na_2.85V_1.85Zr_0.15（PO₄）₃ （NVZP-15） demonstrated a discharge specific capacity of 76.5 m A·h/g at 15.0 C,with a capacity retention of 80.6%after 800 cycles at 10.0 C.更多还原