Title page for etd-0829112-143450


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URN etd-0829112-143450
Author I-Chang Tsai
Author's Email Address No Public.
Statistics This thesis had been viewed 5361 times. Download 1027 times.
Department Mechanical and Electro-Mechanical Engineering
Year 2011
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Performance Analysis of a Micro-PEM Fuel Cell with Different Flowfields and Hydrophobic/ Hydrophilic Gas Diffusion Layers
Date of Defense 2012-07-03
Page Count 109
Keyword
  • Open ratio
  • Hydrophilic/hydrophobic
  • Serpentine
  • Serpentine-Parallel
  • Micro proton exchange membrane fuel cell
  • Gas diffusion layer
  • Abstract This research mainly investigated how the hydrophilic and hydrophobic properties of gas diffusion layer, and the different open ratio of the flowfield may affect the performance of the micro proton exchange membrane fuel cell (μPEMFC). The flow plate used in this experiment was made through deep UV lithography manufacturing processes and micro-electroforming manufacturing processes. Four different open ratios, 52.8 %, 50.8 %, 75.2 % and 75.75 %, of the flowfield were designed for the flow plate composed of serpentine-parallel and serpentine geometrical micro configurations. Acrylic (PMMA: Polymethylmethacrylate) was used to make the terminal plate placed on both sides of the micro proton exchange membrane fuel cell. By varying values of the hydrophilic and hydrophobic properties of the anode gas diffusion layer, the effects of these two parameters on the polarization curve and power density of the cell were explored. All results obtained in the experiment are presented by P-I curve and V-I curve. The experiment results show that, with 1: 5 flow ratio of anode to cathode, a design with the gas diffusion layer made of the material with hydrophobic factor 20 wt.% and with open ratio of 50.8 % for anode flow channel as well as open ratio of 75.75 % for cathode flow channel may have the best performance.
    Advisory Committee
  • Chao-Kuang Chen - chair
  • Ching-Jenq Ho - co-chair
  • Chin-Chia Su - co-chair
  • Shou-Shing Hsieh - advisor
  • Files
  • etd-0829112-143450.pdf
  • Indicate in-campus at 0 year and off-campus access at 1 year.
    Date of Submission 2012-08-29

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