Feasibility study of using microfluidic platforms for visualizing bubble flows in electrolyzer gas diffusion layers
| Autor: | Ali Kalantarian, Rami Abouatallah, R. Wang, James S. Wallace, Faraz Arbabi, Aimy Bazylak |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment 020209 energy Bubble Microfluidics Flow (psychology) Multiphase flow Energy Engineering and Power Technology 02 engineering and technology Electrolyte 021001 nanoscience & nanotechnology 0202 electrical engineering electronic engineering information engineering Electronic engineering Gaseous diffusion Electrical and Electronic Engineering Physical and Theoretical Chemistry Composite material 0210 nano-technology Porosity Polymer electrolyte membrane electrolysis |
| Zdroj: | Journal of Power Sources. 258:142-149 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2014.02.042 |
| Popis: | In this study, microfluidic platforms were used to visualize air bubble transport in two-dimensional (2D) representations of gas diffusion layers (GDLs) to gain insight into how the geometric features of the GDL impact multiphase flow in polymer electrolyte membrane (PEM) electrolyzers. Two-dimensional porous networks were designed using volumetric pore space information, including average porosity and average throat size obtained from micro-computed tomography (micro CT) visualizations. Microfluidic chips were fabricated to represent felt, sintered powder, and foam GDLs and used to simulate the transfer of oxygen bubbles generated at the catalyst layer, through the GDL towards the flow channels of a PEM electrolyzer. The results of this work indicate that the use of microfluidic platforms for evaluating PEM electrolyzer GDLs is highly promising. |
| Databáze: | OpenAIRE |
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