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讲座主标题: High Performance Methanol Reforming Type Micro Fuel Cell       希望录制
讲座人: Dr. Fan-Gang Tseng
讲座地点: 方正301会议室
讲座开始时间: 2012-03-24 15:30:00
讲座结束时间: 2012-03-24 01:00:00
讲座人介绍:

 Fan-Gang Tseng received the B.S. degree in power mechanical engineering from National Tsing Hua University, Taiwan in 1989, and the M.S. degree from the Institute of Applied Mechanics in National Taiwan University, Taiwan, in 1991. In 1998, he received his Ph.D. degree in mechanical engineering from the University of California, Los Angeles, USA (UCLA), under the supervision of Prof. C.-M. Ho and C.-J. Kim. After one year with USC/Information Science Institute as a senior engineer working on a new microfabrication process, EFAB, he became an assistant professor with Engineering and System Science Department of National Tsing-Hua University, Taiwan from August, 1999, and advanced to associate professor in August, 2002, as well as full professor in August 2006.  He is currently the Deputy Director of the Biomedical Technology Research Center, NTHU, and the Department Chairman of Engineering and System Science Dept., NTHU. His research interests are in the fields of Nano-Biosensors, Bio-NEMS, Micro Fuel Cells, and Nano/Micro-Fluidic Systems.  He received 40 patents, wrote 5 book chapters, published more than 120 Journal papers and 300 conference technical papers in Biosensors, Bio-N/MEMS, Micro Fuel Cells, and Micro/Nano Fluidics related fields, and co-organized or co-chaired many conferences including IEEE MEMS, IEEE NEMS, IEEE Transducers, Micro TAS, ISMM, IEEE Nano, and IEEE Nanomed.  He received several awards, including Outstanding research award (2010-2012) and Mr. Wu, Da-Yo Memorial Award (2005) from National Science Council, Taiwan, six best paper/poster awards (1991, 2003, 2004, 2005, 2008, 2010), NTHU new faculty research award (2002), NTHU outstanding teaching award (2002), NTHU academic booster award (2001), and NSC research award (2000).  
   

讲座内容介绍:

In the present study, a novel micro-channel methanol reformer with a finger-shaped groove structure was successfully demonstrated to enhance the methanol conversion rate and the hydrogen yield. By introducing a centrifugal technique, a porous and gradient distribution of the catalyst layer thickness can be obtained inside the micro-channels so as to force the methanol steam to react sufficiently with high surface area catalysts. As the ratio of binder to catalysts varied from 60 to 0, the methanol conversion rate, hydrogen selectivity and hydrogen yield of the micro-methanol reformer at 250 oC can approach ~100%, 92% and 1.56×10-5 mole min-1, respectively. Moreover, a high performance output can still be obtained even at 200 oC, which is superior to our previous studies. Furthermore, a silicon-based micro proton exchange membrane fuel cell (μ-PEMFC) is introduced, carrying out a highly efficient catalyst utilization and cell performance. The design integrates micro/nano-machining techniques to enhance reaction area, the micro-patterned reaction chamber to create more three-phase zones and reduce fuel diffusion impedance, and the micro-interlocks to solidify interfacial strength and reduce ohmic impedance. The best cell output in this study can approach 26 mW cm-2 only with a Pt catalyst loading of 0.69 mg cm-2











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