本文采用锰盐微乳液中通氧气法成功制备了超细粉末MnO2,对所得样品进行了化学分析,XRD,TEM测试,证明为γMnO2,平均粒径在纳米级范围内.再经恒电流放电,循环伏安,分形维数,交流阻抗等测试,发现在适当制备条件下所得纳米MnO2具有良好的放电性能,并对此作了初步的理论探讨
A nanophase MnO 2 was synthesized using w/o microemulsion as reation media, The most favorable experiment conditions for the preparation of nm MnO 2 were researched. XRD,TEM,AC impedance, cyclic voltammetry etc. examinations were used to characterize the sample comparison with the classical MnO 2 (I.C.No.1EMD,electrolytic manganese dioxide). Sample shows that the crystal styucture of the synthesized samples are mainly γ MnO 2, with average particle size in the nanometer as shown by TEM. It was found that the discharge capacity of nm MnO 2 obtained is significantly higher than that of the I.C.No.1 EMD.
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