Enhancing performance of proton ceramic fuel cells through fluorine-doped perovskite oxides

IF 11 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Rare Metals Pub Date : 2025-01-09 DOI:10.1007/s12598-024-03115-8

Wen-Huai Li, Yong-Xin Li, Yan Yang, Yang-Feng Song, Wen-Xin Liu, Wei-Feng Chen, Yao-Ji Chen, Feng-Ping Yu, Chun-Liang Ge, Yu Guo, Ran Ran, Wei Zhou

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Abstract

Proton ceramic fuel cell efficiently converts chemical energy into electrical energy, representing a pivotal component of future energy systems. However, its current performance is hindered by limitations in cathode and electrolyte materials, thereby impeding commercialization. Anion doping emerges as a promising strategy to enhance the electrochemical efficiency of perovskite-based cathodes and electrolytes. However, integrating this approach within a single-cell structure still requires further research. In this study, F-doped perovskite oxides BaCo_0.4Fe_0.4Zr_0.1Y_0.1O_2.9-δF_0.1 (BCFZYF) and BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_2.9-δF_0.1 (BZCYYbF) were synthesized for use as the cathode and electrolyte, respectively, in proton ceramic fuel cells. Our findings demonstrate that F-doped perovskite oxides exhibit superior electrochemical performance and enhanced structural stability. Furthermore, doping both electrodes and electrolytes with F ions improves their interfacial compatibility. The cell configuration BCFZYF | BZCYYbF | Ni-BZCYYbF achieved a peak power density of 998 mW·cm⁻² at 650 °C using H₂ as fuel, and it maintained stable operation for over 400 h at 550 °C with a current density of 400 mA·cm⁻². This research underscores an effective strategy for enhancing the performance and durability of proton ceramic fuel cells.

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通过掺氟钙钛矿氧化物提高质子陶瓷燃料电池的性能

质子陶瓷燃料电池能有效地将化学能转化为电能，是未来能源系统的重要组成部分。然而，其目前的性能受到阴极和电解质材料的限制，从而阻碍了商业化。阴离子掺杂是提高钙钛矿基阴极和电解质电化学效率的一种很有前途的策略。然而，将这种方法整合到单细胞结构中还需要进一步的研究。本研究合成了掺f的钙钛矿氧化物BaCo0.4Fe0.4Zr0.1Y0.1O2.9-δF0.1 （BCFZYF）和BaZr0.1Ce0.7Y0.1Yb0.1O2.9-δF0.1 (BZCYYbF)，分别作为质子陶瓷燃料电池的阴极和电解质。我们的研究结果表明，掺f的钙钛矿氧化物具有优异的电化学性能和增强的结构稳定性。此外，在电极和电解质中掺杂F离子可以改善它们的界面相容性。电池结构BCFZYF | BZCYYbF | Ni-BZCYYbF在650℃下以H2为燃料的峰值功率密度为998 mW·cm−2，在550℃下电流密度为400 mA·cm−2，可稳定运行400 h以上。本研究强调了提高质子陶瓷燃料电池性能和耐久性的有效策略。图形抽象

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来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.