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Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
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Synergistic Ce/In dual-doping in La0.3Sr0.7FeO3-δ: breaking the activity-stability trade-off in SSOFC electrodes
Jianhua Liu1, Yufeng Wang1, Qian Yang1
1State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, 830046, Xinjiang, PR China. jianhua.liu@xju.edu.cn.
Abstract:
This study develops La0.3Sr0.6Ce0.1Fe0.9In0.1O3-δ (LSCeFIn-0.1) as a symmetric electrode for symmetrical solid oxide fuel cells (SSOFCs) through Ce/In dual-doping. Ce stabilizes the perovskite structure, while In enhances oxygen vacancy concentration and O2- mobility. The LSCeFIn-0.1 exhibits low polarization resistances of 0.097 Ω cm2 in H2 and 0.037 Ω cm2 in air. The LSGM-based cells achieve a peak power density (PPD) of 1049 mW cm-2 and demonstrate stable operation over 300 h at 800 °C. Dual-doping effectively balances structural stability and ion transport, advancing perovskite electrodes for efficient SSOFCs.
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