High-Entropy Spinel Oxide Nanostructures as Stable Cathodes for Solid Oxide Fuel Cells DOI
Zhaohui Chen, Ben Ma,

Chen Dang

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Solid oxide fuel cells (SOFCs) represent a promising clean energy technology for efficient chemical-to-electrical conversion with minimal environmental impact. However, the development of cathode materials that can maintain both high performance and long-term stability remains challenging, particularly due to degradation nanostructured cathodes caused by particle coarsening. This study employs an impregnation method fabricate high-entropy spinel (Mg0.2Fe0.2Co0.2Ni0.2Cu0.2)Fe2O4 (MFCNCF) nanoparticles varying loadings on porous Ce0.9Gd0.1O1.95 (GDC) skeleton. The optimized 30 wt % MFCNCF loading achieves remarkably low polarization resistance 0.12 Ω·cm2 maximum power density 1063.94 mW·cm-2 at 800 °C. Most significantly, entropy stabilization effect enables their microstructure throughout 240 h operation negligible degradation. introduces novel strategy combining design nanostructure engineering develop stable high-performance SOFCs.

Language: Английский

High-Entropy Spinel Oxide Nanostructures as Stable Cathodes for Solid Oxide Fuel Cells DOI
Zhaohui Chen, Ben Ma,

Chen Dang

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Solid oxide fuel cells (SOFCs) represent a promising clean energy technology for efficient chemical-to-electrical conversion with minimal environmental impact. However, the development of cathode materials that can maintain both high performance and long-term stability remains challenging, particularly due to degradation nanostructured cathodes caused by particle coarsening. This study employs an impregnation method fabricate high-entropy spinel (Mg0.2Fe0.2Co0.2Ni0.2Cu0.2)Fe2O4 (MFCNCF) nanoparticles varying loadings on porous Ce0.9Gd0.1O1.95 (GDC) skeleton. The optimized 30 wt % MFCNCF loading achieves remarkably low polarization resistance 0.12 Ω·cm2 maximum power density 1063.94 mW·cm-2 at 800 °C. Most significantly, entropy stabilization effect enables their microstructure throughout 240 h operation negligible degradation. introduces novel strategy combining design nanostructure engineering develop stable high-performance SOFCs.

Language: Английский

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