Damisih, Ade Utami Hapsari, Retna Deca Pravitasari, Jarot Raharjo, Riyan Achmad Budiman, Annisa Raihana Aziza, Shintia Nurdianti, Rahmat Setiawan Mohar, Bambang Triwibowo, Khuzaimah Arifin, Ekavianty Prajatelistia
Lanthanum-doped cerium (LDC) has attracted significant attention recently due to its remarkable properties and potential application in various fields, particularly solid oxide fuel cells (SOFCs). In this study, LDC powders with the chemical composition of Ce0,85La0,15O2–δ were synthesized using sol-gel and co-precipitation methods. The effects of the synthesis method on the structural, morphological, and thermal properties of LDC powders were evaluated with a focus on their suitability for SOFC electrolyte application. X-ray diffraction (XRD) analysis confirmed that the synthesized powders were single phases of CeO2 without detectable impurities. The average crystallite sizes of powders prepared by the sol-gel and co-precipitation methods were approximately 21.7 nm and 29.8 nm, respectively. Scanning electron microscopy (SEM) revealed distinct powder morphologies between the two synthesis routes. The sol-gel method produced smaller particle with more uniform size distribution, with an average particle size of ~548 nm, compared to ~3732 nm for the co-precipitation method. Furthermore, the sol-gel derived powder demonstrated higher thermal stability and a wider energy band gap, likely due to their smaller particle size. These results suggested that the sol-gel method produced LDC powders with enhanced properties, making it a more suitable approach for SOFC electrolyte application. Overall, this study highlights the advantages of the sol-gel method in synthesizing LDC powders with superior characteristics for SOFC applications. © 2026 American Institute of Physics Inc.. All rights reserved.
1Research Center for Advanced Materials, National Research and Innovation Agency (BRIN), B.J. Habibie Science and Technology Area, South Tangerang, 15314, Indonesia; Faculty of Mathematic and Natural Sciences, Brawijaya University, Malang, 65145, Indonesia; Faculty of Mechanical and Aerospace Engineering, Bandung Institute of Technology, Bandung, 40132, Indonesia; Research Center for Photonics, National Research and Innovation Agency (BRIN), B.J. Habibie Science and Technology Area, South Tangerang, 15314, Indonesia
