| 초록 |
Polymer-electrolyte-membrane fuel cells (PEMFCs) are attractive power sources for transportation applications. Unfortunately, the cell performance of PEMFCs is decreased due to three main losses: activation, ohmic, and mass transport loss. Among these losses, mass transport loss can be reduced by modifying the design of flow field in the bipolar plates. Metal foam, which is a three-dimensional porous material, can play a role in flow field because high porosity distributes reactants on entire area and removes efficiently generated water. In this work, we proposed various kinds of copper foam as flow field and optimized the structure of copper foam to achieve high cell performance. Single cell test, oxygen gain, and electrochemical impedance spectroscopy were evaluated to investigate the effect of copper foam on cell performance. |
