Experimentally validated numerical modeling of Eu doped SrCeO3membrane for hydrogen separation

A comprehensive study of dielectric, modulus, impedance, and conductivity of SrCeO3 synthesized by the combustion method

“…have been used. Further using these methods, we can estimate lattice strain also 18,19 . According to the Williamson–Hall method, the grain size and microstrain of perovskite materials can be evaluated from the XRD patterns quantitatively using the relationship plot of $$$$\begin{equation}{\beta }_{hkl}{\mathrm{cos}}\theta = \frac{{K\lambda }}{D} + 4\varepsilon \ {\mathrm{sin}}\theta ,\end{equation}$$$$where K is .91, λ is the incident X‐ray wavelength, D is the crystallite size, and β is the full‐width half maximum (FWHM) of the diffraction peaks.…”

“…Further using these methods, we can estimate lattice strain also. 18,19 According to the Williamson-Hall method, the grain size and microstrain of perovskite materials can be evaluated from the XRD patterns quantitatively using the relationship plot of…”

Distinguishing Bulk and Grain Boundary Transport of a Proton-Conducting Electrolyte by Combining Equivalent Circuit Scheme and Distribution of Relaxation Times Analyses

“…It is well known that the overall proton conductivity contribution decreases, while overall oxygen-ionic and p-type electronic conductivity contributions increase with a gradual temperature rise. ,, Principally, both oxygen ions and holes can affect the DRT function at elevated temperatures. However, the mobility (or diffusion coefficient) of holes is approximately 1–2 orders higher than that of protons, while the mobility of oxygen ions is considerably lower than that of protons. − If the hole conductivity would increase, the corresponding peaks should be shifted toward the higher frequency values due to the fastest mobility. Experimentally, we observed the reverse tendency that can be explained by the appearance of the meaningful oxygen-ionic conductivity caused by transportation of more massive oxygen ions with lower frequencies or higher relaxation times.…”

Effect of Sn doping on sinterability and electrical conductivity of strontium hafnate

“…In the 1980s, compounds capable of proton transfer were discovered among perovskites [8][9][10][11], and since then, active research has been carried out in the field of developing perovskites with high proton conductivity. Among perovskite-like oxides of the A 2+ B 4+ O3 type, the materials based on BaCeO3 and SrCeO3 exhibit the highest proton conductivity [12][13][14][15][16], but their use in electrochemical cells is hindered by their low chemical resistance to carbon dioxide. Zirconates and hafnates of alkaline earth metals are characterized by high chemical stability, which makes them promising for practical applications, and possess oxide-ion and proton conductivity; however, the ionic conductivity of these materials is low [17][18][19][20][21].…”