摘要
以钛板为基体,通过热分解H2IrCl6、TaCl5和H2SiO3的混合涂液制备了Ti/IrO2–Ta2O5–SiO2阳极,研究了SiO2含量对Ti/IrO2–Ta2O5–SiO2阳极电催化活性及稳定性的影响。结果表明:掺杂SiO2后Ti/IrO2–Ta2O5–SiO2阳极电催化活性降低;适量SiO2可以提高Ti/IrO2–Ta2O5–SiO2阳极稳定性。当涂液中Si的摩尔分数为5%时,Ti/IrO2–Ta2O5–SiO2阳极的稳定性最好;当Si的摩尔分数达到20%时,其稳定性低于未掺SiO2的电极的稳定性。
A Ti/IrO2-Ta2O5-SiO2 anode was prepared by thermal decomposition with a mixed solution of H2IrCl6, TaCl5 and H2SiO3 on titanium sheet. The effects of SiO2 content on electrocatalytic activity and stability of the Ti/IrO2-Ta2O5-SiO2 anode were studied. The results showed that the electrocatalytic activity of Ti/IrO2-Ta2O5-SiO2 anode is decreased after SiO2 addition and its stability is improved with a proper dosage of SiO2. The stability of Ti/IrO2- Ta2O5-SiO2 anode is the best when the molar fraction of Si in coating bath is 5%, but it is inferior to that of Ti/IrO2- Ta2O5 anode when the molar fraction of Si reaches 20%.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2011年第2期71-74,共4页
Electroplating & Finishing
基金
国家自然科学基金(50901041)
航空基金(2009ZF56017)
江西省自然科学基金(2010GQH0114)
关键词
钛基材
二氧化铱
五氧化二钽
二氧化硅
阳极
析氧
电催化活性
稳定性
titanium substrate
iridium（IV） oxide
tantalum（V） oxide
silica
anode
oxygen evolution
electrocatalytic activity
stability
作者简介
叶志国（1979-），男，江西人，博士，讲师，主要从事纳米薄膜电极研究。作者联系方式：（E-mail）yezhiguo2008@163．com。
