低温海水用钛基金属氧化物阳极的制备与性能

发布时间：2018-04-22 17:12

  本文选题：船舶压载水 + 电解海水　； 参考：《高等学校化学学报》2016年04期

【摘要】：将Ti N纳米粉体与Ta Cl5正丁醇饱和溶液混合制得中间层涂覆液,通过热分解法在不同焙烧温度下得到了含有中间层的Ti/(Ti-Tax)O2/Ir O2电极,并与相同工艺下得到的传统Ti/Ir O2电极进行对比分析.采用X射线衍射和扫描电子显微镜对制备的电极进行了表征,通过循环伏安曲线、极化曲线和恒流加速寿命测试等电化学手段对电极性能进行了分析.结果表明,引入中间层可以使Ti/(Ti-Tax)O2/Ir O2电极400℃低温焙烧样品表层Ir O2结晶发育更好,得到了通常高温下才具有的典型龟裂纹形貌;相对于500℃高温焙烧样品,其在海水中的电化学活性表面积提高近6倍,在4℃和100 m A/cm2电流密度下的电极电位(1.37 V)降低100 m V,催化性能得到显著提高;同时加速寿命相对于传统的Ti/Ir O2电极提高10倍以上,是一种适用于低温海水环境的、具有较高活性和耐久性的新型阳极.
[Abstract]:The intermediate layer coating solution was prepared by mixing the nano tin powder with the saturated solution of Ta Cl5 n-butanol. The Ti/(Ti-Tax)O2/Ir O 2 electrode containing the intermediate layer was obtained by thermal decomposition at different calcination temperatures. And compared with the traditional Ti/Ir O 2 electrode obtained by the same process. The electrode was characterized by X-ray diffraction and scanning electron microscope. The electrochemical properties of the electrode were analyzed by cyclic voltammetry, polarization curve and constant current accelerated life test. The results show that the crystallization of ir O 2 in the surface layer of Ti/(Ti-Tax)O2/Ir O 2 electrode calcined at 400 鈩，

本文编号：1788162