对天然黄铁矿进行深加工后获得平均粒径为13μm,ω(Fe)、ω(S)分别为45.30％、50.95％的超微细黄铁矿粉,并以高级脂肪酸盐对其进行改性,采用TG/DSC、XPS及XRD对粉体进行了表征.XRD和TG/DSC分析表明粉体主要物相为黄铁矿FeS2,表面包覆着有机改性剂；XPS分析结果表明,改性前后黄铁矿表面S分别以8O42-和[S2]2-形式存在,而Fe均以Fe3+形式存在.对粉体试样进行电化学阻抗谱、恒电流放电测试和循环伏安测试,结果表明,改性黄铁矿具有较小的电荷转移电阻和较好的导电性；常温下以0.354A电流放电,截止电压为0.5V,改性黄铁矿的放电电位平台为1.44V,放电比容量达850mAh/g,接近理论容量890mAh/g.
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