In Situ Exsolved NiFe/(NiFe)OX Core-Shell-Structured Nanocatalysts on Perovskite Anode with Enhanced Coking Resistance

Authors：Yang, Hongyu; La, Ming; Wang, Ziming; Tan, Ting; Qin, Mingxia; Hu, Junhua; Yang, Chenghao^*

Source：ACS Sustainable Chemistry & Engineering, 2022, 10(38): 12510-12519.

DOI：10.1021/acssuschemeng.2c01024

• Solid oxide fuel cells
• Perovskite
• Anode
• In situ exsolution
• Core-shell structure

A solid oxide fuel cell (SOFC) anode consisting of a NiFe bimetal alloy/(NiFe)O-x (NFA/NFO) core-shell-structured nanocatalyst-decorated ceramic substrate was fabricated by in situ reduction o f A-site deficient cubic perovskite (Ba0.2Sr0.8)(0.9)Ni0.07Fe0.63Mo0.3O3-6 (BSNFM) in wet H-2 at 800 degrees C. The BSNFM-NFA/NFO ceramic anode exhibits an excellent catalytic activity toward H-2 and hydrocarbon fuels. The La0.8Sr0.2Ga0.83Mg0.17O3-6 (LSGM) electrolyte-supported SOFC single cell with a BSNFM-NFA/NFO anode delivers a Pmax of 1099 mW cm(-2) in wet H-2 at 800 degrees C and 1049 mW cm(-2) in wet C3H8 at 850 degrees C, respectively. Moreover, the single cell with a BSNFM-NFA/NFO anode showed a stable output under a constant current density of 1.0 A cm(-2) at 750 degrees C in C3H8 fuel, suggesting that BSNFM-NFA/NFO is a promising anode with outstanding coking resistance.

• Institution
  郑州大学