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<p>Metal-supported intermediate temperature solid oxide fuel cells (MS-IT-SOFCs) have the potential to become a key technology for future energy conversion systems. It has been established that porous support microstructures play a critical role in fostering electrochemical processes. In the present investigation, we have demonstrated that sol–gel solutions can be used for the impregnation of FeCrAl support to avoid oxidation at high temperatures, i.e., 500 to 700&#xa0;°C operating range of IT-SOFC fuel cells. The main objective of the current research is to improve the durability of the metal support, thereby enhancing the performance of the whole fuel cell assembly in the MS-SOFC. This study focuses on the use of La<sub>0.6</sub>Sr<sub>0.4</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O<sub>3</sub> (LSCF), Ba<sub>0.5</sub>Sr<sub>0.5</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O<sub>3</sub> (BSCF), LaNi<sub>0.6</sub>Fe<sub>0.4</sub>O<sub>3</sub> (LNF), and La<sub>0.75</sub>Sr<sub>0.25</sub>Cr<sub>0.5</sub>Mn<sub>0.5</sub>O<sub>3</sub> (LSCM) perovskites synthesized by the sol–gel route. The FeCrAl support was impregnated with synthesized solutions using the dip-coating technique to protect the metallic fibers from corrosion, which is essential in the MS-IT-SOFC application. In the present study, LSCF and LNF solutions have shown the most promising results for developing anti-corrosion properties. The impregnation process has permitted the reduction of the resistivity of the porous support in comparison to the unimpregnated support. As a result, the coated metallic fibers were efficiently protected against corrosion at high temperatures.</p>

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Impregnation of FeCrAl porous metallic support in perovskite oxides by dip-coating for metal-supported intermediate temperature SOFC applications

  • 期刊论文

  • 发表日期：

    2025年1月30日

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  • Elguettari Imen,
  • Rolle Aurélie,
  • Duponchel Benoit,
  • Vandewalle Maxence,
  • Lydia Karmazin,
  • Fasquelle Didier

摘要

Metal-supported intermediate temperature solid oxide fuel cells (MS-IT-SOFCs) have the potential to become a key technology for future energy conversion systems. It has been established that porous support microstructures play a critical role in fostering electrochemical processes. In the present investigation, we have demonstrated that sol–gel solutions can be used for the impregnation of FeCrAl support to avoid oxidation at high temperatures, i.e., 500 to 700 °C operating range of IT-SOFC fuel cells. The main objective of the current research is to improve the durability of the metal support, thereby enhancing the performance of the whole fuel cell assembly in the MS-SOFC. This study focuses on the use of La0.6Sr0.4Co0.8Fe0.2O3 (LSCF), Ba0.5Sr0.5Co0.8Fe0.2O3 (BSCF), LaNi0.6Fe0.4O3 (LNF), and La0.75Sr0.25Cr0.5Mn0.5O3 (LSCM) perovskites synthesized by the sol–gel route. The FeCrAl support was impregnated with synthesized solutions using the dip-coating technique to protect the metallic fibers from corrosion, which is essential in the MS-IT-SOFC application. In the present study, LSCF and LNF solutions have shown the most promising results for developing anti-corrosion properties. The impregnation process has permitted the reduction of the resistivity of the porous support in comparison to the unimpregnated support. As a result, the coated metallic fibers were efficiently protected against corrosion at high temperatures.