Electrical enhancement of DMFC by Hybrid PVD Pt-M/C Alloy Catalyst

• Main Authors: Wei-Fan Wang, 王偉帆
• Other Authors: Ko-Wei Weng
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/03191836541950004291

碩士 === 明道大學 === 材料科學與工程學系碩士班 === 98 === Direct methanol fuel cell (DMFC) is one of the proton exchange membrane fuel cell (PEMFC). The methanol is a good (prefect) renewable fuel due to cheapness, ease to get, and ease to store and distribute. Respect to the other fuel cells, the DMFC has many advantages, such as simple structure, high volume energy ratio, short enable time, and easy to distribute. Hence, the DMFC is important in the development of the fuel cells. Some problems exist in develop the DMFC, such as high price, poisoning of the fuel cell’s anode catalyst, low performance of the anode, and the crossover of the methanol. The previous problems can be improved via using a catalyst with high performance and containing little platinum. The high performance catalyst increases both the oxidization efficient of the anode and the reduction efficient of the cathode. In this project, a platinum carbon film is synthesized by hybrid PVD system, including pulse magnetron sputtering source and metal plasma ion implantation system. The film replaces conventional catalyst that catalyst uniformly coats on a carbon clothes. In addition, chromium, iron, nickel and molybdenum as the third catalyst uniformly implant on a porous platinum carbon film to from Pt-Cr/C, Pt-Fe/C, Pt-Ni/C and Pt-Mo/C catalysts via the ion implantation of the hybrid PVD system. A three-phase zone with high-density structure catalyst and porous platinum carbon film is formed to increase the activity of the catalyst, anti-poisoning to CO, and the decrease of platinum. The contribution implements huge production and commercial application due to make the cost of the DMFC down.