为了改善聚氧钼酸盐 Na3[AlMo6O24H6](NAM)作为锂离子电池正极材料的电化学性能，通过升高反应溶液的温度，得到了小粒径的NAM材料，并对其进行了红外光谱、XRD、扫描电镜、EIS等分析和充放电性能测试。结果表明，当反应温度高于40°C时，粒径降低到10μm以下。当合成温度达到80°C时，NAM的粒径最小(~3μm)，且其电化学性能最佳，在首次循环过程中，0.04C下的首次放电容量高达409 mA·h/g，库伦效率达95%。
In order to improve the electrochemical performance of polyoxomolybdate Na3[AlMo6O24H6](NAM) as the cathode material of lithium ion battery, the NAM materials with small particle size were synthesized by elevatingthe synthesistemperaturein the solution.The as-prepared NAM materials were investigated by FT-IR, XRD, SEM and EIS. Their discharge?charge and cycle performance were also tested. The resultsshowthat the particle size decreasesto less than10μm at the temperature ofhigher than 40°C.When synthesized at 80°C,the NAMwiththe smallest particle size (~3μm)exhibitsthe best electrochemical performance such ashigh initial discharge capacity of 409 mA·h/gandcoulombic efficiency of 95% in the first cycle at 0.04C.
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