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URN etd-0829117-170648 Statistics This thesis had been viewed 333 times. Download 0 times. Author Chao-Yang Huang Author's Email Address email@example.com Department Mechanical Engineering Year 2016 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 60 Title Fabrication of Pt nanowires by electro-forcespinning technique and its effects on the performance of a PEMFC Keyword Pt nanowires Electro-forcespinning PEMFC PEMFC Electro-forcespinning Pt nanowires Abstract This study presents a novel method to design needle-type spinneret for the fabrication of ultrafine Pt nanowires by electro-forcespinning technique. The Pt nanowires were produced by solution made of PVP polymer mixed with Pt precursor H2PtCl6. The parameters considered in this work, including the applied voltage, rotational velocity in fiber production rate, and the polymer concentration. To acquire the best quality of nanowires and conditions. At least, the electrochemical activity of the prepared Pt nanowires was analyzed by cyclic voltammetry. Experimental results show that a lower PVP concentration, lower voltage and higher rotational velocity in fiber production rate benefits the reduction of fiber diameter. The case of 6 wt% PVP solution with 1800 rpm and applied voltage of 9 kV is found to get the best quality of nanowires. The fiber diameter is 54.8 nm at this condition. In addition, cyclic voltammetry was applied to measure the electrochemical activity analysis of Pt nanowires. Test results showed that parameters can measure 2.527×10-3 C in the best electrochemically active surface area. It’s better than traditional Pt/C and it’s measure 8.169×10-4 C. This technique comparing to traditional electrospinning presented may be swift for fabrication various nanowires and manufacture efficiently. Advisor Committee Min-Hsing Chang - advisor
Ching-Chih Tai - co-chair
Wei-Hsin Chen - co-chair
Files Date of Defense 2017-07-18 Date of Submission 2017-08-30