Effects of Sintering Parameters on the Low-Temperature Densification of GDC Electrolyte Based on an Orthogonal Experiment

Mengru Zhang, Lisha An, Enhua Wang*, Hewu Wang, Minggao Ouyang, Haoran Hu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A solid oxide fuel cell is a high-efficiency power device in hydrogen energy utilization. The durability and dynamic performance of metal-supported solid oxide fuel cells (MS-SOFCs) are superior to those of electrolyte- or electrode-supported cells, with many potential applications. Gadolinium-doped cerium (GDC) has a high oxygen ionic conductivity, making it suitable to act as the electrolyte in MS-SOFCs operating at 500–650 °C. However, the low-temperature sintering of GDC is difficult for MS-SOFCs. In this study, the factors affecting the low-temperature densification of GDC are analyzed based on an orthogonal experimental method. The shrinking rates of 16 experiments are determined. The effects of the particle diameter, pressure of the uniaxial press machine, sintering temperature, and fractions of aid and binder are estimated. The results of a range analysis indicate that the content of sintering aid has the greatest impact on the low-temperature densification of GDC, followed by the powder diameter and the uniaxial pressure. A maximum shrinking rate of 46.99% is achieved with a temperature of 1050 °C.

Original languageEnglish
Article number831
JournalCatalysts
Volume12
Issue number8
DOIs
Publication statusPublished - Aug 2022

Keywords

  • MS-SOFC
  • densification
  • gadolinium-doped ceria (GDC)
  • low-temperature sintering
  • orthogonal experiment

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Zhang, M., An, L., Wang, E., Wang, H., Ouyang, M., & Hu, H. (2022). Effects of Sintering Parameters on the Low-Temperature Densification of GDC Electrolyte Based on an Orthogonal Experiment. Catalysts, 12(8), Article 831. https://doi.org/10.3390/catal12080831