Preparation And Characterization Of Ordered Support Catalysts For The Fuel Cell

With the increasing conditions of energy crisis and the serious environmental pollutions, the fuel cell has the chance to be applied in the daily life. It all owes to several advantages such as clean, effective, sustainable and low temperature. Catalysts play an important role in the fuel cell. Recently, the noble metal platinum is still the most important part for the catalysts. However, the commercialization of the fuel cell is stoped because of the high cost and short lifetime. It can’t wait to study in reducing the usage of platinum and increasing the lifetime. We synthesized the carbon nanotube arrays/graphene (CNTs/G), PANI/reduced graphene oxide (PANI/RGO), Pt/MWCNTs, Pt/graphene, PANI/RGO-supported Pt and CNTs/G-supported Pt by an electroless Ni-plating method and a chemical vapor deposition step and so on. By using XRD, TEM, HRTEM, SEM, XPS, CV, LSV, EIS and i-t, we characterize the structure, morphology and electronic performance of these products. More details are as follows:1. Firstly, graphene and Ni/RGO are synthesized. Then, CNTs/G was synthesized by combining an electroless Ni-plating method and a chemical vapor deposition step using ethyne as the carbon source. We study the time, temperature and speed of gas to confirm the best conditions. Finally, the structure and composition of CNTs/G are confirmed by using XRD, TEM, SEM and Raman.2. We use ethylene glycol and ethyne to reduce the reactions for getting the CNTs/G-supported Pt catalyst. Then we study the effects caused by these two reducing agents. Finally, we evaluated the catalytic activity and lifetime of the catalysts using CV, LSV, EIS and i-t and compared with the JM Pt/C.3. Firstly, we synthesized the support of PANI/RGO. Then, Pt/MWCNTs, Pt/graphene, PANI/RGO-supported Pt and CNTs/G-supported Pt are synthesized by using the reducing agent of ethyne. Finally, we studied the structure of them and evaluated the catalytic activity and durability of them.