2025/09/16 by Gedik, Aydan, Kabelac, Stephan
#510 #Peltier coefficient #Seebeck coefficient #electrodes heat generation #non-equilibrium thermodynamics (NET) #reversible heat effects #solid oxide cell (SOC) #transported entropy of ions
paper · doi:10.15488/19648
In this study, the transported entropy of ions for 8YSZ and 10Sc1CeSZ electrolytes was experimentally determined to enable precise modeling of heat transport in solid oxide cells (SOCs). The Peltier coefficient, crucial for thermal management, was directly calculated, highlighting reversible heat transport effects in the cell. While data for 8YSZ are available in the literature, providing a basis for comparison, the results for 10Sc1CeSZ show slightly smaller Seebeck coefficients but higher transported ion entropies. Specifically, at 700°C and an oxygen partial pressure of 𝑝O2=0.21 bar, values of 𝑆∗O2−=52±10 J/K·F for 10Sc1CeSZ and 𝑆∗O2−=48±9 J/K·F for 8YSZ were obtained. The transported entropy was also validated through theoretical calculations and showed minimal deviations when comparing different cell operation modes (O2