质子交换膜燃料电池中碳纳米管负载的氧电极材料制备与表征

Preparation and Characterization of the Carbon Nano Tubes Supporting Oxygen Electrode Material for PEMFC

本文介绍了碳纳米管 (CNTs)在质子交换膜燃料电池催化剂中的应用 ,对Pt CNTs及Pt C催化剂的比表面积、孔径、孔分布及金属表面分散情况进行了比较。实验发现 ,具备典型中孔结构的CNTs使得铂金属在其表面分散更加均匀。在催化剂制备工艺的研究中发现 ,合适的硝酸 (4 0 %)处理会使催化剂载体具备更加适宜的孔结构。通过本文的讨论 ,可以认为Pt CNTs是一种可以应用在质子交换膜燃料电池上很有前景的电催化剂。

In this paper, carbon nano tubes(CNTs) were used as the support material of electrocatalyst for proton exchange membrane fuel cell (PEMFC). The surficial structures of Pt/CNTs and Pt/C, which have various specific surface area, porosities, distribution of pore size and dispersion of active metals, were analyzed respectively. It was experimentally found that CNTs with typical mesoporous structures were more desirable for the dispersion of Pt metal granules. During the investigation on catalyst preparation, it was found that the support treated with HNO 3(40%) has more appropriate porous structure. It showed that Pt/CNTs could be a promising electrocatalyst for PEMFC application, and various factors may influence the surface characteristics of catalyst.