fig6

Figure 6. (A) The schematic diagram illustrates the in-situ exsolution and dissolution course of Co-doped SF1.5M; (B) The redox stability test of the Co-doped SF1.5M-GDC 2 h cell was evaluated at an operating voltage of 1.2 V and a temperature of 800 °C; (C) the stability test of Co-doped SF1.5M-GDC and Co-doped SF1.5M-GDC 2 h cell. Reproduced with permission^[120], Copyright 2020, Wiley-VCH; (D) At 800 °C, in-situ XRD patterns of as-prepared SFRuM after switching between reducing and oxidizing atmospheres; (E) SFRuM-GDC cell CO₂ electrolysis performance after six redox cycles at 1.2 V and 800 °C; (F) At 800 °C and 1.2 V, the stability test of the SFRuM R2 cell and Faradaic efficiencies of CO were tested. Reproduced with permission^[121], Copyright 2021, Springer Nature; (G) At high negative potentials, the processes of degradation caused by structural evolution; (H) The 15-min potential step chronoamperometry current density response curves; (I) Raman spectra were collected from the cathode surface of SFNM+0.0Fe-red-GDC and SFNM+1.2Fe-red-GDC after the long-term stability test. Reproduced with permission^[124], Copyright 2022, Springer Nature. XRD: X-ray diffraction; SFRuM: Sr₂Fe_1.4Ru_0.1Mo_0.5O₆; GDC: Gd doped ceria.