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铅和铅合金在氯化物溶液里以高电流密度进行阳极极化时,其表面上,生成厚的、肿胀而又多孔的氯化铅沉积物。当微铂电极嵌入铅表面后,在氯化物介质里,以同样高的电流密度下进行阳极极化,其铅表面能生成过氧化铅。为了代替昂贵的铂,将过氧化铅微电极(在过氧化铅电沉积时脱落下来的过氧化铅薄片加工成小圆柱体)嵌入铅或铅合金电极里,并在氯化物溶液里进行阳极极化。在这种情况下,铅和铅合金电极表面上,也能生成过氧化铅。在室温下,铅/二氧化铅二元电极在3％的NaCl溶液里以3安/分米~2电流密度下进行阳极极化时,发现在电极表面上能很好地生成PbO_2膜。二氧化铅微电极的取出与插入,以及二氧化铅微电极与铅电极的面积之比对过氧化铅生成的影响,也进行了研究。嵌有二氧化铅微电极的铅和铅合金阳极,在氯化物溶液及人造海水里进行了阳极极化,从重量的变化及表面生成致密、无龟裂的PbO_2膜来考虑,1％Ag(Pb)/PbO_2二元电极是很好的阳极。
Lead and lead alloys, when anodically polarized at high current density in chloride solutions, create thick, swollen and porous lead chloride deposits on their surfaces. When the micro platinum electrode is embedded in the lead surface, the anode is polarized in the chloride medium at the same high current density, and the lead surface can generate lead peroxide. In order to replace the expensive platinum, lead peroxide microelectrodes (thin pieces of lead peroxide that fall off during electrodeposition of lead peroxides are processed into small cylinders) are embedded in lead or lead alloy electrodes and the anode electrode is subjected to a chloride solution The In this case, lead peroxide can also be generated on the surface of lead and lead alloy electrodes. At room temperature, the lead / lead dioxide binary electrode was anodically polarized in a 3% NaCl solution at a current density of 3 A / dm2, and a PbO2 film was well formed on the electrode surface. The removal and insertion of lead dioxide microelectrodes and the effect of the ratio of the area of the lead dioxide microelectrodes to the lead electrodes on the generation of lead peroxide have also been studied. Lead and lead alloy anodes embedded with lead dioxide microelectrodes were anodically polarized in chloride solution and artificial seawater. Considering the change in weight and the dense, non-cracked PbO 2 film on the surface, 1% Ag ( Pb) / PbO 2 binary electrode is a good anode.