Structure and Composition of supported PtCu-LaOx Composite Multi-layer Membrane Electrode
In order to reduce production cost of Fuel Cells, a new type of Pt/C membrane electrodes --PtCu-LaOx, LaOx-PtGu and PtCu-LaOx-PtCu composite multi-layer membrane electrodes - would be raised, in which with developing different membranous layer form dispersed on the surface of carbonaceous or monocrystalline silicon substrates were manufactured by Ion Beam Sputtering technology. Phase composition, micro-area surface topography and elements of these electrodes were analyzed by X-ray Diffraction, Scanning Electron Microscopy combined with Energy Dispersive Spectrometry and Atomic Force Microscope, respectively. It was found that doping La could not only enhance Pt crystallization and decrease Pt grain size but also contribute to Pt(111) preferential orientation growing in the LaOx-PtCu, and that biggish ratio of La(At％) : Pt(At％) in micro-area would be difficult of occurring particles reunion on PtCu-LaOx surface, and that the orientation growing of Pt(200), Pt(220) and Pt(311) would be restrained in PtCu-LaOx and PtCu-LaOx-PtCu, and that the Pt alloy particle exhibited more homogeneous distribution and less size in PtCu-LaOx-PtCu. Our study indicated that these new types of membrane electrodes could be used in Fuel Cells and make Fuel Cells as a new power source for electrical vehicles.
Structure Composition PtCu-LaOx IBS Fuel Cells
Bin Yang Tao Xu
School of Materials Science and Engineering, Kunming University of Science and Technology,253 Xuefu Avenue, Kunming, Yunnan, 650093, China
国际会议
大连
英文
822-825
2011-10-19（万方平台首次上网日期，不代表论文的发表时间）