Innovative Stainless-Steel Porous Substrate for Metal-Supported Solid Oxide Fuel Cells

Porous metallic substrate for metal-supported solid oxide fuel cells was developed utilizing stainless-steel powder and triethanolamine as a new binder. Starch was added as an additional agent to increase porosity and gas permeability of the samples. The structure and functional properties of the obtained substrates as the function of the additives content and the processing conditions were investigated. The optimal parameters have been determined. When the combined percentage of the binder and pore-former was raised up to 5%, the porosity and permeability increased up to 46.2% and 3.1 d respectively. As the sintering time of the substrate increased to 6h, the hardness grew up to 311 HRC. A thermal expansion coefficient value of  \(\sim 14\times 10^{-6}\)  has been obtained. The results demonstrate how the preparation process affects all of the major parameters, including porosity, permeability, hardness and roughness. Both the content of additives and processing conditions may vary in relatively broad range to attain particular required properties of the substrates. Better to similar properties compared to literature data have been obtained.