陽極電極壓力對直接甲醇燃料電池之性能影響

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陽極電極壓力對直接甲醇燃料電池之性能影響

Influence of Anode Electrode Pressure on the Performance of Direct Methanol Fuel Cell

徐志豪 , Masters　　Advisor：蘇春熺　　

繁體中文

直接甲醇燃料電池；二氧化碳；介面壓力；螺栓壓力； Direct Methanol Fuel Cell ； CO2 ； Clamping Pressure ； Bolt-Clamping

Abstract │ Reference (38) │ Times Cited (1) │ Altmetrics

Abstract 〈TOP〉

Parallel Abstract 〈TOP〉

The price of energy was increased and consumes more than before. So many researchers want to find new energy to replace oil. Direct Methanol Fuel Cell (DMFC) will become the best option of portable electronic products. The miniature DMFC and air-breathing DMFC has become recently the major design concepts of DMFC stacks development. This paper aim at the effect of assembles DMFC, because the different machine bolts force to pressure DMFC structure. Inadequate clamping pressure may lead to leakage of fuel cell, high electric impedance and malfunction of the fuel cell. In order to treat about fuel cell capability under different coefficients in the anode collection, include anode place、anode pressure and temperature of DMFC. In the experiment, it used ANSYS’s Workbench software to simulate different places of anode collection and different pressures of anode collection. A charge coupled detector (CCD) camera was used to take images of carbon dioxide (CO2) during operation of DMFC. To measure volume of carbon dioxide (CO2) created at anodic of direct methanol fuel cell (DMFC) using image processing. For DMFC in order to explore relation between current output and as-imaged carbon dioxide (CO2) volume at 25 °C. 
The simulation results can know that the current collectors placed at the central location of the deformation is more uniform than the other position results from more uniform deformation. Current collector exert high pressure on the anode of the MEA can measure better battery performance. The maximum power density was 1.18 mW. cm-2. When the temperature increases to 50 C, the maximum power density measure was 2.06 mW.cm-2, increase the rate of 75%. Impedance measured resistance has decrease in the trend because the pressure of increasing. When the pressure is 1.55 N.mm-2 resistance of 0.65 Ω, pressure to 1.35 N.mm-2 resistance of 1.93 Ω.

Reference ( 38 ) 〈TOP〉

[1] Larminie, J. and A. Dicks, Fuel Cell Systems Explained, John Wiley, 2003,1-24.
連結：
[2] 郭書榕，具有不同電極結構之直接甲醇燃料電池的交流阻抗量測研究，碩士論文，國立臺北科技大學機電整合研究所，台北，2008。
連結：
[3] S. C. Thomas, X. Ren, S. Gottesfeld and P. Zelenay, “Direct Methanol Fuel Cells : Progress in Cell Performance and Cathode Research,” Electrochimica Acta,vol. 47, 2002, pp. 3741-3748.
連結：
[4] H. Chang, J. R. kim, J. H. Cho, H. K. Kim and K. H. Choi, “Materials and Process for Small Fuel Cells,” Solid State Ionics, vol. 148, 2002, pp. 601-606.
連結：
[5] Q. Liao, X. Zhu, X. Zheng and Y. Ding, “Visualization Study on the Dynamics of CO2 Bubbles in Anode Channels and Performance of A DMFC,” Journal of Power Sources, vol. 171, 2007, pp. 644-651.
連結：

Times Cited (1) 〈TOP〉

曹智凱(2011)。一種估算直接甲醇燃料電池之甲醇濃度之方法。臺北科技大學製造科技研究所學位論文。2011。1-97。

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