TY - JOUR
T1 - Enhancing the catalytic activity and CO2 chemisorption ability of the perovskite cathode for soild oxide electrolysis cell through in situ Fe-Sn alloy nanoparticles
AU - Lv, Jiawen
AU - Sun, Wang
AU - Xu, Chunming
AU - Yang, Xiaoxia
AU - Ma, Minjian
AU - Zhang, Lihong
AU - Zhang, Shixian
AU - Qiao, Jinshuo
AU - Zhen, Shuying
AU - Sun, Kening
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/8/1
Y1 - 2022/8/1
N2 - Herein, the Sn-doped perovskite oxide Sr1.95Fe1.4Sn0.1Mo0.5O6-δ (SFSnM), which exhibited in situ exsolved Fe-Sn alloy nanoparticles and controllable phase transformation, was synthesized to catalyze the reduction of CO2 through A-site deficiency regulation. The in situ exsolved Fe-Sn alloy nanoparticles were uniformly distributed on the surface of the SFSnM substrate after reduction, which significantly enhanced the catalytic activity and CO2 adsorption capacity of the SFSnM cathode. Moreover, a single cell with an FeSn@SFSnM cathode exhibited excellent CO2 electrolysis performance, achieving a current density of 3.269 A cm−2 and an Rp value of 0.145 Ω cm2 at 800 °C and 1.8 V. Additionally, no significant performance attenuation was observed during a long-term stability test (200 h), indicating the good stability of FeSn@SFSnM cathode. Overall, these results demonstrated that the designed FeSn@SFSnM cathode shows great potential for high-performance solid oxide electrolysis cells (SOECs).
AB - Herein, the Sn-doped perovskite oxide Sr1.95Fe1.4Sn0.1Mo0.5O6-δ (SFSnM), which exhibited in situ exsolved Fe-Sn alloy nanoparticles and controllable phase transformation, was synthesized to catalyze the reduction of CO2 through A-site deficiency regulation. The in situ exsolved Fe-Sn alloy nanoparticles were uniformly distributed on the surface of the SFSnM substrate after reduction, which significantly enhanced the catalytic activity and CO2 adsorption capacity of the SFSnM cathode. Moreover, a single cell with an FeSn@SFSnM cathode exhibited excellent CO2 electrolysis performance, achieving a current density of 3.269 A cm−2 and an Rp value of 0.145 Ω cm2 at 800 °C and 1.8 V. Additionally, no significant performance attenuation was observed during a long-term stability test (200 h), indicating the good stability of FeSn@SFSnM cathode. Overall, these results demonstrated that the designed FeSn@SFSnM cathode shows great potential for high-performance solid oxide electrolysis cells (SOECs).
KW - CO reduction reaction
KW - In situ exsolution, Cathode
KW - Ruddlesden-Popper structure
KW - Solid oxide electrolysis cell
UR - http://www.scopus.com/inward/record.url?scp=85129407924&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2022.121127
DO - 10.1016/j.seppur.2022.121127
M3 - Article
AN - SCOPUS:85129407924
SN - 1383-5866
VL - 294
JO - Separation and Purification Technology
JF - Separation and Purification Technology
M1 - 121127
ER -