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3D reconstruction of a gas diffusion layer and a microporous layer

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journal contribution
posted on 20.04.2011, 14:12 by Hossein Ostadi, Kyle Jiang, Pratap Rama, Yu Liu, Rui ChenRui Chen
The focus of the current study is on a state-of-the-art twin-layer gas diffusion layer (GDL) which consists of carbon tissues with a fibre diameter of 5~20 μm, and contains a microporous layer (MPL) coating which has sub-micron porous features. In the current study, real-world digital threedimensional images of the GDL-MPL assembly are created through X-ray nano-tomography with a 680 nm pixel resolution for the GDL and focused ion beam/scanning electron microscopy (FIB/SEM) nano-tomography with a 14 nm pixel resolution for the MPL. The critical nano-structural features including porosity, characteristics lengths and 3D pore size distribution are determined directly from the 3D digital representation. In addition to morphological parameters, the FIB/SEM nanotomography technique has been combined with lattice Boltzmann (LB) numerical modelling in order to calculate the tortuosity and permeability of the MPL.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Citation

OSTADI, H. 3D reconstruction of a gas diffusion layer and a microporous layer. Journal of Membrane Science, 351(1-2), pp. 69-74

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publication date

2010

ISSN

0376-7388

Language

en