LiMn_0.5Fe_0.5PO₄ cathode materials were prepared via a low-cost solid-state method and mixed with sucrose and then calcined at different temperatures. The structure, morphology, and electrochemical performance of the synthesized material were analyzed via X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy, high-resolution transmission electron microscopy, galvanostatic charge–discharge tests, cyclic voltammetry, and electrochemical impedance spectroscopy. The results showed that materials prepared via the solid-state method contained nanosized particles with a good olivine structure and exhibited excellent particle dispersibility at various sintering temperatures, resulting in high electrochemical performance. Moreover, at a high sintering temperature of 650 ℃, the battery material exhibited the highest conductivity and lithium-ion diffusion coefficient of 150.9 Ω and 2.15 × 10⁻⁵ S cm⁻¹, respectively. The material featured a high discharge specific capacity of 110.0 mAh g⁻¹ at a current density of 5 C owing to its good dispersion and regular spherical particle morphology obtained at 650 ℃. The electrochemical properties of battery materials were directly affected by the improvement and optimization of the parameters in the preparation process.

LiMn _0.5 Fe _0.5 PO ₄通过低成本固相法制备正极材料，并与蔗糖混合，然后在不同温度下煅烧。通过X射线衍射、扫描电子显微镜-能量色散谱、高分辨率透射电子显微镜、恒电流充放电测试、循环伏安法和电化学阻抗谱分析了合成材料的结构、形貌和电化学性能。结果表明，固相法制备的材料含有橄榄石结构良好的纳米颗粒，在不同的烧结温度下均表现出优异的颗粒分散性，从而具有较高的电化学性能。而且，在650℃的高温烧结下，^分别为-5 S cm ^-1。由于其良好的分散性和在650 ℃下获得的规则球形颗粒形貌，该材料在5 C电流密度下具有110.0 mAh g ^-1的高放电比容量。制备过程中参数的改进和优化直接影响电池材料的电化学性能。