Superior Active and Durable Air Electrode for Protonic Ceramic Cells by Metal‐Oxide Bond Engineering DOI Open Access

Xiaole Yu,

Lin Ge,

Yaowei Mi

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Protonic ceramic cells (PCCs) have been identified as promising energy conversion devices, offering flexible fuel options and reduced operating consumption at intermediate temperatures. However, the application of traditional cobalt-based perovskite air electrodes in PCCs is hindered by their insufficient durability high coefficient thermal expansion. In this study, a straightforward metal-oxygen bond engineering conducted, introducing single-phase perovskite, Ba0.95La0.05(Fe0.8Zn0.2)0.9Ni0.1O3- δ (BLFZN0.1), substitution for perovskite. BLFZN0.1 demonstrates superior electrochemical properties, with an area-specific resistance 0.015 Ω cm2 700 °C, reliable over 100 h. The introduction Ni element increases concentration oxygen defects enhances catalytic activity. As result, protonic cell using electrode achieves highest peak power density (1353 mW cm⁻2 °C) yet recorded BLFZ-based electrodes. Furthermore, single exhibits remarkable current (1.66 A cm-2 electrolysis mode, highlighting its potential devices. This study presents effective strategy modifying PCC performance comparable durability, thereby facilitating commercial application.

Language: Английский

Superior Active and Durable Air Electrode for Protonic Ceramic Cells by Metal‐Oxide Bond Engineering DOI Open Access

Xiaole Yu,

Lin Ge,

Yaowei Mi

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Protonic ceramic cells (PCCs) have been identified as promising energy conversion devices, offering flexible fuel options and reduced operating consumption at intermediate temperatures. However, the application of traditional cobalt-based perovskite air electrodes in PCCs is hindered by their insufficient durability high coefficient thermal expansion. In this study, a straightforward metal-oxygen bond engineering conducted, introducing single-phase perovskite, Ba0.95La0.05(Fe0.8Zn0.2)0.9Ni0.1O3- δ (BLFZN0.1), substitution for perovskite. BLFZN0.1 demonstrates superior electrochemical properties, with an area-specific resistance 0.015 Ω cm2 700 °C, reliable over 100 h. The introduction Ni element increases concentration oxygen defects enhances catalytic activity. As result, protonic cell using electrode achieves highest peak power density (1353 mW cm⁻2 °C) yet recorded BLFZ-based electrodes. Furthermore, single exhibits remarkable current (1.66 A cm-2 electrolysis mode, highlighting its potential devices. This study presents effective strategy modifying PCC performance comparable durability, thereby facilitating commercial application.

Language: Английский

Citations

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