用电子显微镜扫描和x射线衍射法观察表明FEMD-C和掺铁EMD的晶体都呈现纤维态。掺铁EMD的纤雄态虽不尽相同,但也可统归于FEMD范畴。实验说明氟离子对FEMD-C的花瓣生长和纤维轴的生成起重要作用。EMD中铁掺杂的结果产生新的XRD峰和新的放热峰,表明有新相生成。实验发现这些样品都不是正交晶体。掺铁EMD的放电容量比一般EMD高8～10％,FEMD-C具有更高的容量。计算了掺铁EMD中Mn、Fe的电负性及阳离子键百分数,作为掺铁影响的参考。 Observation by electron microscopy and x-ray diffraction showed that the crystals of both FEMD-C and iron-doped EMD were fibrous. Iron-doped EMD although the fiber state is not the same, but also be categorized as FEMD category. Experiments show that fluoride ion plays an important role in petal growth and fiber axis formation of FEMD-C. As a result of the iron doping in EMD, a new XRD peak and a new exothermic peak appear, indicating a new phase formation. The experiment found that none of these samples were orthorhombic. The discharge capacity of iron-doped EMD is 8 to 10% higher than the general EMD, and the FEMD-C has a higher capacity. The electronegativity and cation bond percentage of Mn and Fe in the iron-doped EMD were calculated as a reference for the influence of iron addition.