High Efficient Nanocatalyst Synthesis Using Semi-Reflux Chemical Reduction System by Temperature Control in Micro DMFC

Shin-Mei Gong, Yi-Shiuan Wu, Tsung-Kuang Yeh, Chuen-Hung Tsai, and Fan-Gang Tseng 2, 3 Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu, Taiwan Division of Mechanics, Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan [email protected] Abstract: In this paper, we successfully fabricated high catalytic activity Pt supported on carbon nanotubes (CNTs) with temperature regulation in the semi-reflux chemical reduction system (SRCRS) demonstrated in our previous study [1]. Compared to traditional reflux system reducing at high temperature of 160°C [9], the SRCRS can effectively save more than 60% reduction time at lower temperature of 130°C. Besides, the electrochemical results also showed that the mass activity and electrochemical surface area (ESA) of Pt catalysts can dramatically be enhanced by 58% and 63%, respectively.