| 초록 |
In recent, we have achieved fabricating ultrahigh proton exchange membrane fuel cell(PEMFC) performance of a thin film which can be operated under zero relative humidity due to dense-structured (NSDS) catalyst layer (CL) with a narrow pore-size distribution that aids improving water uptake and controlling mass transport of water. The objective of this study is focused on recent advances in 3-D microstructure quanti- fication and pore-scale transport analysis to assess the contri- bution of dual-regions on the overall transport characteristics of the NSDS CL using focused ion beam/ scanning electron microscopy(FIB/SEM) nano tomography. These real-world digital 3-D datesets are then analyzed using microstructure analysis tools and a full pore morphology model to determine the water imbibition characteristics and the key structure-related transport properties, including the phase volume fractions, pore connectivity, tortuosity, diffusivity coefficient, pore size distribution, permeability, and capillary pressure–saturation curves. |
