Corrosion resistance of catalyst support on the development of proton exchange membrane fuel cell application

• Main Authors: Wei-Shu Yang, 楊偉書
• Other Authors: Guo-Bin Jung
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/70501480057871610483

碩士 === 元智大學 === 機械工程學系 === 98 === this study, we use composite support (CNT /ZrO2) to promote the catalyst durability and dispersion of Pt. At first, we use the commercial (CNT or C) for supporter to find out the best condition in producing Pt catalyst. The result shows the best was at 30℃ and NaOH concentration was 5M. Then we try to use different method to make composite supporter (CNT /ZrO2) for high performance and high durability. Result shows chemical vapor deposition (CVD) was the best and the structure schematic on TEM was the most correspond with CNT /ZrO2. Analysis by cyclic voltammetry (CV) the electro chemical surface area (ECSA) was better than commercial E-TEK which was 90 m2/g and 67 m2/g Pt loading. Find the best synthesize way (include the affect of the reaction temperature and PH) then use this method after modify the supporter to synthesized. Use two method Ni-ZrO2 and pure ZrO2 supporter modified, through TEM observation the growth of carbon nanotubes and Pt dispersion. Finally we use CV test the performance and long time degrade compared with commercial catalyst supporter. Result shows two modify way Ni-ZrO2 and pure ZrO2 on anti-corrosion performance superior to commercial one and the corrosion of carbon become slightly. It can prove that the ceramic composite supporter has better effect on carbon corrosion.