Preparation And Performance Of Membrane Electrode Assembly With Domestic Materials For PEMFC

Proton exchange membrane fuel cell (PEMFC) has a wide application in the field of aerospace, submarines, and electric vehicles for the advantage of high energy density, low operation temperature and stable performance. In order to commercialize PEMFC production soon, scientists are committed to research the key materials of fuel cell, trying to reduce the costs and improve the performance of PEMFC. Because of the high price and limited performance, the key materials and technology of membrane electrode assembly (MEA) became the main factors to restrict PEMFC achieving industrialization and commercialization. Researching on PEMFC membrane electrode materials and the preparation methods have important practical values and theoretical significance.In the thesis, the operation conditions of proton exchange membrane fuel cell for vehicle application, hydrogen for fuel and atmosphere air as the oxidant were chosen. The purpose is to study the application possibility of core domestic PEMFC materials, as well as the production of fuel cell membrane electrode in the business process and the application prospects of domestic PEMFC.At the aspect of domestic fuel cell materials research, including the selection of key fuel cell material, such as proton exchange membrane, carbon paper, Pt/C catalyst, and the properties analysis of this key materials. The performance between domestic commercial or quasi-commercial fuel cell key materials and imported fuel cell key materials were compared. The characterization of micro structure and polarization curves of both the key domestic fuel cell materials and imported materials were researched in detail, and the key fuel cell materials with the outstanding performance were chosen for fabrication of PEMFC.At the aspect of the membrane electrode assembly preparation, the production process and single fuel cell performance testing were studied to determine the preparation methods for domestic key materials. The MEA with domestic key material was prepared by a novel method, and the effects of ingredient and technology on its polarization curves were sudied. The experiment result shows the MEA with improved production technology has 30% higher performance compared with traditional MEA, moreover the MEA enlarge test experiment indicates the discharge performance of fuel cell has no obvious change.In summary, this paper work to guide selection of outstanding low cost key domestic fuel cell materials, to explore novel membrane electrode assembly preparation method for proton exchange membrane fuel cell.