Table 2.

Obtained microstructural properties using commercial software and reconstructed geometry by $\mu$-CT scan imaging.

Microstructural parameter	Ultra-thin GDL
Porosity	45.33%
Thickness	28.9 μm
Absolute permeability (μm2)	2490.4
Absolute permeability (day)	2523.4
Tortuosity	0.558
Apparent electrical conductivity (S/m)	1838.15
Apparent formation factor	3.767
Input concentration (mol/${\text{m}}^3$)	1711
Output concentration (mol/${\text{m}}^3$)	0
Apparent molecular diffusivity (${\text{m}}^2/\text{s}$)	0.0483
Apparent thermal conductivity $\left(\frac{\text{W}}{\text{m}.\text{K}}\right)$	10.148