Structural reconstruction and transport characterization of porous transport layers

The structure of the porous transport layer in PEM electrolysis for hydrogen production is reconstructed using computed tomography, and liquid flow is simulated and analyzed with the Boltzmann method, focusing on how pore structure and porosity influence the hydrodynamic characteristics of the porous transport layer. Results indicate that pore structure and porosity influence the permeability, flow rate, and uniformity of liquid water flow distribution in the porous transport layer, which further impacts the stability of the PEM electrolyzer and hydrogen production efficiency. This provides a theoretical foundation for optimizing the design of the porous transport layer in PEM electrolysis for hydrogen production, and demonstrates the potential of combining CT reconstruction technology with fluid simulation in studying the porous transport layer.