SEM/EDX analysis of electrolytic manganese dioxide deposits
SEM/EDX analysis of electrolytic manganese dioxide deposits
复制标题
电解二氧化锰沉积物的 SEM/EDX 分析
DOI：
10.1016/0013-4686(85)85010-6
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发表时间：
1985
影响因子：
6.6
通讯作者：
H. Kamada
中科院分区：
文献类型：
--
作者：
K. Matsuki;T. Endo;H. Kamada
用扫描电子显微镜和能谱分析研究了电解二氧化锰镀层的形貌变化和表面分析。在含有H_2SO_4或H_2SO_4和HCl的硫酸锰溶液(95℃)中，以1~3A dm−_2的电流密度在阳极上沉积二氧化锰。在电解过程中，根据电流密度和电解液组成的不同，在一定的电解时间后，阳极电位迅速上升。在电位突变前后获得的细粒二氧化锰沉积物的表面观察到一些富硫的沉积物。这些观察结果表明，溶液中SO2-−-4离子的参与在电解二氧化锰的阳极沉积过程中是重要的。
The morphology change of electrolytic manganese dioxide deposits and their surface analysis were investigated using SEM and EDX. Manganese dioxide was deposited on the anode from a manganese sulphate solution (95°C) containing H2SO4or both H2SO4and HCl at current densities ranging from 1 to 3 A dm−2. In the course of the electrolysis, a rapid increase in the anodic potential was observed after a certain electrolysis time, depending upon current densities and bath composition. Some deposits, rich in sulphur, were observed on the surface of the fine manganese dioxide deposits which were obtained before and after the abrupt potential change. These observations suggest that the participation of the SO2−4ion in the solution is important in the anodic deposition process of electrolytic manganese dioxide.