【摘要】 利用 Pb( )盐与 Na OH在室温下进行固相反应制备了纳米级α-Pb O粉体 (桔红色 ) .借助 X射线衍射、透射电镜测试对合成的纳米粉体试样的物理性质作了表征 .初步探讨了反应机理 .将合成的试样用于改性 Mn O2 电极 .1次深度放电测试结果表明 ,样品的掺杂量在 1 .2 5%～ 5.0 0 %之间对 Mn O2 有良好的改性效果 ,中等负荷放电时 ,纳米 Pb O改性的 Mn O2 电极的放电容量比常粒径 Pb O改性的 Mn O2 电极的放电容量高出 2 0 %以上 ,比纯国际 1 # 电解锰样 ( γ-Mn O2 )的放电容量平均高出约 50 % ,在重负荷放电时 ,改性 Mn O2电极的放电容量提高幅度更大 .更多还原

【Abstract】 Nanosize α PbO particles were prepared by one step solid state reaction of Pb(Ⅱ) compounds with NaOH at room temperature and characterized by XRD and TEM techniques. The formation mechanism of nanophase materials was discussed. The α PbO modified MnO 2 electrodes were fabricated and their electrochemical properties were studied by using constant current deep discharging tests. The results indicate that the optimal portions of α PbO additives were 1 25%～5 00%. The discharge capacity of the nanophase α PbO modified MnO 2 electrodes were in average 50% higher than that of International Common Sample No.1 electrolytic manganese dioxide and 20% higher than that of normal α PbO particle modified MnO 2 electrodes in middle load discharging. The most high discharge capacity was observed for modified MnO 2 electrode at heavy load discharging.更多还原