data set on Sc-doped strontium iron molybdenum cathode for high‐efficiency CO2 electrolysis in solid oxide electrolysis cell

XRD data are tested by X-ray diffraction (XRD, X’Pert PRO MPD). GASA Ⅱ software are used analyzed the XRD data. Origin software is used to draw the XRD and the rerefinement images.The microstructure of the powders and single cells are conducted using scanning electron microscopy (SEM, Quanta FEG 250) and high-resolution electron microscopy (HR-TEM, JEM-2010F). Element distributions are tested using energy dispersive X-ray spectroscopy (EDX). DigitalMicrograph software is used to analyze the TEM data.X-ray photoelectron spectroscopy (XPS, Thermo Scientific K-Alpha) is employed to determine the elemental composition and valences of the powders. XPSPEAK software is used to analyze the XPS data. Origin software is used to draw the results curves.Thermogravimetric analysis (TGA, Netzsch STA 449F3) is utilized to analyze the weight change of the materials. Electron paramagnetic resonance (EPR, Bruker A300-10/12) is used to confirm the oxygen vacancies in both materials. Electron cyclotron resonance (ECR) is used to evaluate the chemical oxygen exchange properties of the materials. Mathlab software is used to fit data. CO2 temperature-programmed desorption (CO2-TPD) is carried out to assess the CO2 adsorption capacity of the samples.Origin software is used to draw the results curves.Linear sweep voltammetry (LSV) and electrochemical impedance spectra (EIS) are performed using a Potentiostat/Galvanostat (AUTOLAB PGSTAT302 N) with an AC amplitude of 10 mV and a frequency range from 0.01 Hz and 100 kHz. To analyze EIS data and the relaxation time, RelaxIS software is used.Gas chromatography (GC) is used for quantitative analysis of sample composition.Origin software is used to draw the results curves.