摘要
钛基IrO2-Ta2O5涂层阳极的形状分别是板状和扩张网。采用涂覆了H2IrCl6.H2O的盐酸溶液和TaCl5乙醇溶液的混合溶液再进行热分解制备得到IrO2-Ta2O5涂层。分别采用SEM,EDX,CV和加速寿命测试对电极的微观结构和电化学性能进行分析。相对板状电极而言,由于较少的活性物质IrO2在电极表面结晶析出,扩张网状电极具有更低的电化学催化活性。但是由于表面的裂纹较为细密、表面活性元素分布也较为均匀,并且其纵截面的形状更有利于电解析出的气泡排出,扩张网状电极具有更长的加速寿命。
The titanium substrates of IrO2-Ta2O5 coating anodes were manufactured into plate and expanded mesh,respectively.The coatings were prepared by conventionally thermal decomposition with a mixture of H2IrCl6·6H2O dissolved in hydrochloric acid and TaCl5 dissolved in alcohol.The microstructure and electrochemical properties of the electrodes were studied with SEM,EDX,CV and accelerated life test.Compared with plate shape anode,expanded mesh anode has a little lower electrochemical activity due to less active IrO2 crystals precipitation out on it and slender cracks.However,it has longer accelerated life time due to steady and well-distributed ingredient of the coatings and less differences of the atom ratio of Ir and Ta of bulging area and fiat area.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2012年第5期772-775,共4页
Rare Metal Materials and Engineering
