Zhigang Zhu, Honglong Ning, Chen Song, Kaisheng Lin, Taikai Liu, Kui Wen, Changguang Deng, Hanlin Liao, Min Liu
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引用次数: 0
摘要
金属支撑固体氧化物燃料电池在分布式发电、交通、军事等领域有着广阔的应用前景。在商业应用中，电池的电化学性能仍然是一个挑战。调节阳极微结构和优化极化特性是有效的方法。本研究选择大气等离子体喷涂技术制备 Ni-Gd0.2Ce0.8O1.9(GDC) 阳极，采用不同的低等离子体功率（18、21、24 kW），既经济又高效。研究了功率对阳极微观结构和电化学性能的影响。结果表明，随着等离子体功率从 24 千瓦降低到 18 千瓦，阳极的气体渗透性和三相反应边界（TPB）逐渐增加。降低喷射功率可以降低极化电阻，提高功率密度。18 千瓦阳极的极化电阻最小，输出性能最好。在 750 °C 时，开路电压和最大功率密度分别为 1.03 V 和 0.89 W cm-2。极化电阻和总电阻分别为 0.19 和 0.40 Ω cm2。实验结果证明，大气等离子体喷涂可以实现高性能 MS-SOFC 阳极的快速、低成本制备。
Effect of Low Plasma Spraying Power on Anode Microstructure and Performance for Metal-Supported Solid Oxide Fuel Cells
Metal-supported solid oxide fuel cells have broad application prospects in distributed power generation, transportation, military, and other fields. The electrochemical performance of the cell is still a challenge in commercial applications. Regulating the anode microstructure and optimizing polarization characteristics are effective methods. In this study, atmospheric plasma spraying technology is chosen to prepare the Ni-Gd0.2Ce0.8O1.9(GDC) anodes using different low plasma powers (18, 21, 24 kW), which is cost-effective and efficient. The power effect on anode microstructure and electrochemical performance is investigated. The results show that as the plasma power decreases from 24 to 18 kW, the anode’s gas permeability and three-phase reaction boundary (TPB) gradually increase. Reducing the spraying power can decrease polarization resistance and improve power density. The 18-kW anode exhibits the lowest polarization resistance and the best output performance. Open-circuit voltage and maximum power density are 1.03 V and 0.89 W cm−2 at 750 °C, respectively. The polarization resistance and total resistance are 0.19 and 0.40 Ω cm2, respectively. The experimental results prove that atmospheric plasma spraying can realize the rapid and low-cost anode preparation for high-performance MS-SOFC.
期刊介绍：
From the scientific to the practical, stay on top of advances in this fast-growing coating technology with ASM International''s Journal of Thermal Spray Technology. Critically reviewed scientific papers and engineering articles combine the best of new research with the latest applications and problem solving.
A service of the ASM Thermal Spray Society (TSS), the Journal of Thermal Spray Technology covers all fundamental and practical aspects of thermal spray science, including processes, feedstock manufacture, and testing and characterization.
The journal contains worldwide coverage of the latest research, products, equipment and process developments, and includes technical note case studies from real-time applications and in-depth topical reviews.
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