Ru对电解海水用Ti/Ir-Ta-Sn-Sb阳极性能的影响

Effect of Ru on the Performance of Ti/Ir-Ta-Sn-Sb Anode for Electrolytic Seawater

钌系阳极在电解制氯行业具有良好的应用前景,但在电解低温、低盐度海水时寿命损耗较快,铱系阳极在电解海水时表现出优良综合性能,但价格较贵.本文通过在铱系阳极中添加钌,研究钌对铱系阳极性能的影响.结果表明:Ru的添加使铱系阳极涂层表面形成了不规则的“凹凸”形貌,阳极表面积增加,提高了电流效率,但同时也出现Ru的聚集,说明Ru与铱系阳极无法形成稳定的固溶体,从而降低了寿命.

Ruthenium anode has a good application prospect in chlorine electrolysis,but its life loss is fast in low temperature and low salinity seawater electrolysis.Iridium anode has excellent comprehensive performance in seawater electrolysis,but it is expensive.To study effect of Ru on the performance of iridium anode,ruthenium was added to iridium anode.The results showed that the addition of Ru resulted in irregular"concave and convex"appearance on the surface of iridium anode coating,which increased the surface area and current efficiency,but also resulted in the aggregation of Ru.It’s indicated that Ru and iridium anode could not form a stable solid solution,thus reducing the service life.