Timurkutluk, CigdemAltan, TolgaYildirim, FuatOnbilgin, SezerYagiz, MikailTimurkutluk, Bora2024-11-072024-11-0720210378-77531873-2755https://doi.org/10.1016/j.jpowsour.2021.230489https://hdl.handle.net/11480/14492The effect of electrolyte surface patterning on the cell performance is investigated. The patterning process is accomplished by isostatically pressing the electrolyte together with a metal mesh placed on one surface of the electrolyte. In this respect, various electrolyte supports with different surface patterns are fabricated by altering the lamination conditions. Surface analyzes reveal that it is possible to modify the electrolyte surface with consistent patterns by the method suggested and some patterns are also formed on the untreated surface of the electrolyte. Electrolyte supported cells are also built on the patterned electrolyte and tested. Among the cases studied, the highest peak performance of 0.44 Wcm (-2) at 800 degrees C is reached from the cell with an electrolyte support subjected to isostatic pressing with a mesh under 50 MPa pressure and 70 degrees C temperature for 4 min after uniaxially pressing under 20 MPa for 4 min. This electrolyte also shows the lowest average roughness and average depth of the patterns formed. The reference cell with a flat electrolyte, on the other hand, provides 0.32 Wcm(-2) peak power density under the same testing conditions, indicating similar to 38% performance enhancement with the simple method recommended. Impedance measurements are also taken and discussed.eninfo:eu-repo/semantics/closedAccessSolid oxide fuel cellElectrolyteSurface modificationMesh pressingSurface areaArticle51210.1016/j.jpowsour.2021.2304892-s2.0-85114410890Q1WOS:000701663600003Q1