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A novel design and micro-fabrication for copper (Cu) electroforming bipolar plates |
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| Authors: | Hsieh Shou-Shing Huang Ching-Feng Feng Chih-Lun |
| Institution: | aDepartment of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, ROC |
| Abstract: | A novel design and micro-fabrication were developed for micro-proton exchange membrane (PEM) fuel cell stack bipolar plates with cross section of 5 cm2 and thickness of about 650 μm. Copper metals were used to make bipolar plates (BPs) by using a LIGA-like micro-fabrication process of deep UV lithography in order to obtain SU-8 resist patterns/and SU-8 mould. Through two-sided exposure and development, copper metal bipolar plates with serpentine (meandering) flow field configurations for a micro PEM fuel cell stack, were fabricated and performance tests through polarization characteristics were conducted; this made it possible for the first time to consider copper sheets as suitable for BPs in micro PEM fuel cell stacks. |
| Keywords: | Bipolar plates SU-8 pattern transfer Two-sided exposure and development Microelectroforming |
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