钛基钛锡钌锰纳米涂层的制备

Preparation of Ti-based TiSnRuMn Nano Coating

采用热分解法制备了不同温度和元素含量配比的电解二氧化锰Ti/TiSnRuMn阳极纳米涂层。用XRD和SEM分析涂层的成分、结构和形貌,用循环伏安曲线和电位曲线评价涂层的电催化性能和使用寿命。结果表明,制备的涂层为均匀、单一的金红石固熔体结构。温度为500℃时,涂层表面裂纹最多,电催化性能最好;提高Ru与Ti以及Sn与Mn的含量比,涂层的表面裂纹逐渐减少。添加Mn能提高涂层的电催化性能,但改变Sn与Mn的含量比,涂层电催化性能变化不明显;而当Ti∶Ru=2∶3时,涂层电催化性能最好,涂层的加速电解时间为870min。

Ti-based TiSnRuMn nano coatings for electrolytic manganese dioxide anode（EMD） are prepared by the thermal decomposition. The composition, structure and morphology of the coatings are analyzed by XRD and SEM. The electrocatalytic performance and life of the coatings are investigated by the cyclic voltammetry curve and cell voltage curve respectively. The results show that the prepared coatings all consist of single solid solution of rutile- style structure, and the coatings prepared under 500℃ exhibit the best electrocatalytic performance. The cracks on the surface of the coatings can be reduced by increasing the atom concentration ratios of Ru to Ti and Sn to Mn, but the atom concentration ratio of Sn to Mn has little effect on the electrocatalytic performance of the coatings. The coatings with the atom concentration ratio of Ti to Ru being 2 ： 3 indicate the highest electrocatalytic performance, and the accelerated electrolysis time of the coatings of Ti/TiSnRuMn-2233 reaches 870 minutes.