Medium-Entropy Alloy/Oxide Nano Composite for High-Performing High-Temperature CO₂ Electrolysis with Remarkable Carbon Deposition Resistance.

ABSTRACT: Conventional solid oxide electrolysis cells (SOECs) with nickel/yttria-stabilized zirconia (Ni/YSZ) electrodes suffer from low CO₂ reduction activity and severe carbon deposition below 800 °C, limiting scalability. This study introduces a novel medium-entropy alloy/Mn-based oxide composite catalyst deposited via simple infiltration onto the fuel electrode, creating hierarchical heterogeneous metal/oxide nano-interfaces. The catalyst-decorated cell achieves a remarkable 46% increase in CO₂ electrolysis current density, reaching 2.15 A cm^-2 at 1.5 V and 750 °C. Simultaneously, the catalyst demonstrates exceptional carbon deposition resistance, evidenced by a 75% increase in the current density threshold for carbon formation. The cell maintains stable, carbon-

SUBMITTER: Tong J 

PROVIDER: S-EPMC12533207 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature