几种方法制备高分散Pt基电催化剂催化性能比较

A Comparison Study on the Performance of High Dispersed Pt-Based Electric Catalytic Prepared with Several Different Methods

用三种方法制备了不同的Pt/FCNTs催化剂,并表征了其电化学性能.通过大量实验数据发现SR+R+回流法制备的催化剂性能优于其他两种方法制备的催化剂.最高氧化峰电流密度为174 m A,其实峰电位0.70 V左右,并且催化性能也有良好的稳定性.主要是由于自还原和回流的过程增加了氯铂酸与碳纳米管的接触时间,使催化剂有良好的分散性.

In this paper, Pt/FCNTs catalysts were prepared with three different methods and their chemical properties demonstrated. With a large number of experimental data it is found that the catalyst prepared with SR＋R＋ refluxing has higher catalytic activity than the catalysts prepared with the other two methods. The oxidation peak current density is 174mA, the peak potential is about 0.70V, and the catalytic performance is more stable. The reasons lie in the increase of contact time of reflux of chloroplatinic acid and carbon nanombes in the reduction and reflow process and the dispersion properties have been facilitated.