Porous titanium plates' efficacy as a transport layer is determined by two fundamental parameters: pore size and porosity. These parameters influence both electrochemical performance and gas transport qualities.
1. Pore Size: Pore size is regulated during fabrication by modifying the template or powder size.
Smaller pore diameters increase electrochemical activity by allowing more catalysts to be loaded and increasing reaction surface area. However, extremely narrow holes might impede gas and liquid transfer, lowering overall performance. Finding the correct balance is critical.
2. Porosity is the ratio of pore volume to total volume in a porous titanium plate. Higher porosity enhances gas transport by allowing more gas to pass through the pores.
However, increased porosity reduces mechanical strength and rigidity, potentially leading to deformation or cracking of the transmission layer.
In summary, optimizing pore size and porosity based on specific application requirements and fabrication processes is crucial for achieving a well-balanced combination of electrochemical performance and gas transport efficiency.
