Investigation of external compression in scaling up of planar solid oxide fuel cells

Onbilgin S., Timurkutluk C., Timurkutluk B., Celik S.

International Journal of Hydrogen Energy, cilt.47, sa.45, ss.19752-19757, 2022 (SCI-Expanded, Scopus)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 47 Sayı: 45
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.ijhydene.2021.11.064
  • Dergi Adı: International Journal of Hydrogen Energy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Artic & Antarctic Regions, Chemical Abstracts Core, Communication Abstracts, Environment Index, INSPEC
  • Sayfa Sayıları: ss.19752-19757
  • Anahtar Kelimeler: Solid oxide fuel cell, Scale up, External load, External compression, Performance
  • Ankara Yıldırım Beyazıt Üniversitesi Adresli: Hayır

Özet

© 2021 Hydrogen Energy Publications LLCThe effect of contact pressure on the performance of electrolyte supported planar solid oxide fuel cells (SOFCs) are experimentally investigated in this study by varying the pressure applied on the push rod. For this purpose, cells with 1 cm2, 9 cm2, 16 cm2, 81 cm2 and 150 cm2 active areas are manufactured and tested under different external compression pressures. Maximum power densities of 0.486 W/cm2, 0.308 W/cm2 and 0.231 W/cm2 are obtained from the cells with an active area of 1 cm2, 9 cm2 and 16 cm2, respectively, under the same contact pressure. When the impedance results are considered, it is seen that under the same compression pressure, the cell resistance increases nonlinearly with the cell size. However, when the pressure is adjusted according to the active area, a similar power density of approximately 0.4 W/cm2 is obtained from these three cells. Moreover, very similar performances are measured from all cells when a portion of cells with 1 cm2 active is cut and tested under the same contact pressure of 0.2 MPa. The overall results indicate that the external load should be adjusted according to the cell size, but there is no linear relationship between the active area and the applied external pressure.