Cobalt-Free BaFe0.6Zr0.1Y0.3O3−δ Oxygen Electrode for Reversible Protonic Ceramic Electrochemical Cells

被引：0
作者：
Chenghao Yang
Jin Li
Ao Hu
Jian Pu
Bo Chi
机构：
[1] Huazhong University of Science and Technology,State Key Laboratory of Materials Processing and Die and Mould Technology, School of Materials Science and Engineering
[2] Hubei University,Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, MOE Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering
[3] Huazhong University of Science and Technology,MOE Key Laboratory of Material Chemistry for Energy Conversion and Storage
来源：
Transactions of Tianjin University | 2023年 / 29卷
关键词：
Protonic ceramic cells; Oxygen electrode; Perovskite oxides; Cobalt-free; Oxygen vacancies;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Reversible protonic ceramic electrochemical cells (R-PCECs) are ideal, high-efficiency devices that are environmentally friendly and have a modular design. This paper studies BaFe0.6Zr0.1Y0.3O3−δ (BFZY3) as a cobalt-free perovskite oxygen electrode for high-performance R-PCECs where Y ions doping can increase the concentration of oxygen vacancies with a remarkable increase in catalytic performance. The cell with configuration of Ni-BZCYYb/BZCYYb/BFZY3 demonstrated promising performance in dual modes of fuel cells (FCs) and electrolysis cells (ECs) at 650 °C with low polarization resistance of 0.13 Ω cm2, peak power density of 546.59 mW/cm2 in FC mode, and current density of − 1.03 A/cm2 at 1.3 V in EC mode. The alternative operation between FC and EC modes for up to eight cycles with a total of 80 h suggests that the cell with BFZY3 is exceptionally stable and reversible over the long term. The results indicated that BFZY3 has considerable potential as an air electrode material for R-PCECs, permitting efficient oxygen reduction and water splitting.
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页码：444 / 452
页数：8
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