Experimental study on non-uniform arrangement of 3D printed structure for cathodic flow channel in PEMFC
| Autor: | Dong Gyun Kang, In Seop Lim, Min Soo Kim, Chanyeong Park, Sung Hoon Choi, Hyun Sung Lim |
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| Rok vydání: | 2022 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology Proton exchange membrane fuel cell Electrolyte Condensed Matter Physics Cathodic protection Dielectric spectroscopy Fuel Technology Complex geometry Flow velocity Mass transfer Composite material Communication channel |
| Zdroj: | International Journal of Hydrogen Energy. 47:1192-1201 |
| ISSN: | 0360-3199 |
| Popis: | Enhancing mass transfer capability of flow channel is important subject to improve fuel cell performance. In this study, an experimental study about non-uniform arrangement of metallic structures in cathodic flow channel on polymer electrolyte membrane fuel cell is conducted. Metallic 3D printer is used to manufacture 3D mesh with complex geometry. Channel width and bottom-rear channel depth are selected to change the geometry of structure. Assuming that accelerating flow velocity and reinforcing flow direction to gas diffusion layer can improve fuel cell performance, eight basic arrangements are inserted into cathodic carbon bipolar plate to measure fuel cell performance. With I–V curve, the unit cells with non-uniform arrangements of width and tapered structure show performance enhancement of 12.8% in maximum power density, compared with conventional parallel flow channel. According to electrochemical impedance spectroscopy results, performance enhancement by non-uniform arrangement is mainly occur in high current density operation due to low mass transfer resistance. |
| Databáze: | OpenAIRE |
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