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Volume 30 Issue 6
Jun.  2023
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文章导航 >  矿物冶金与材料学报（英文）  > 2023  >  30(6): 1181-1189
Xin Yang, Zhihong Du, Qian Zhang, Zewei Lyu, Shixue Liu, Zhijing Liu, Minfang Han, and Hailei Zhao, Effects of operating conditions on the performance degradation and anode microstructure evolution of anode-supported solid oxide fuel cells, Int. J. Miner. Metall. Mater., 30(2023), No. 6, pp. 1181-1189. https://doi.org/10.1007/s12613-023-2616-7
Cite this article as:
Xin Yang, Zhihong Du, Qian Zhang, Zewei Lyu, Shixue Liu, Zhijing Liu, Minfang Han, and Hailei Zhao, Effects of operating conditions on the performance degradation and anode microstructure evolution of anode-supported solid oxide fuel cells, Int. J. Miner. Metall. Mater., 30(2023), No. 6, pp. 1181-1189. https://doi.org/10.1007/s12613-023-2616-7
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研究论文

运行条件对阳极支撑型固体氧化物燃料电池性能退化和阳极微观结构演变的影响

  • 1)

    北京科技大学材料科学与工程学院, 北京 100083, 中国

  • 2)

    新能源材料与技术北京市重点实验室, 北京100083, 中国

  • 3)

    清华大学能源与动力工程系, 北京100084, 中国

  • 4)

    中广核研究院有限公司, 深圳市氢能安全工程技术研究中心, 深圳 518031, 中国

  • 通讯作者:

    杜志鸿    E-mail: zhihongdu@ustb.edu.cn

    赵海雷    E-mail: hlzhao@ustb.edu.cn

文章亮点

  • (1) 系统研究了运行条件对电池性能衰减和微观结构的影响规律。
  • (2) 评价了电池长期运行稳定性并使用三维重构解析电池微观结构。
  • (3) 揭示了电池性能衰减的主要原因及其内在机理，提出改进策略。
  • 固体氧化物燃料电池(SOFCs)是一种清洁高效的发电技术，在分布式发电站、家庭热电联供以及电动汽车领域具有广阔的应用前景。然而SOFCs性能的快速衰减导致运行寿命缩短，阻碍了其商业化进程。本文旨在研究运行条件对SOFCs性能衰减和阳极微观结构演变的影响规律，给电池性能和稳定性的优化提供理论指导。本文研究了不同运行温度、放电电流密度、运行时间对电池端电压、极化阻抗以及微观结构的影响，解析了阳极微观结构演变规律。研究结果表明，电池放电初期会经历一个快速的衰减期，然后达到稳定状态。大电流密度放电会增加阳极的极化，从而加剧电池初期的衰减率。通过电池阻抗的解析发现初期衰减主要来自于阳极极化电阻的增加。通过阳极微观结构解析，发现阳极与电解质界面活性区域中的Ni催化剂的流失是导致电池运行初期性能下降的主要原因。经过初期快速衰减后，电池性能趋于稳定，在恒流放电工况下运行3000 h，极化电阻增长率仅为0.17%/kh。通过阳极微观结构的三维重构解析可知，在经历初期快速衰减后，电池阳极微观结构的变化较小，电池稳定性较好。未来的研究重点将聚焦在提高电池在复杂工况下的耐久性，并通过调控阳极组成和微观结构抑制电池性能的快速退化。
    • Research Article

    Effects of operating conditions on the performance degradation and anode microstructure evolution of anode-supported solid oxide fuel cells

    + Author Affiliations
      Abstract
    • Performance degradation shortens the life of solid oxide fuel cells in practical applications. Revealing the degradation mechanism is crucial for the continuous improvement of cell durability. In this work, the effects of cell operating conditions on the terminal voltage and anode microstructure of a Ni–yttria-stabilized zirconia anode-supported single cell were investigated. The microstructure of the anode active area near the electrolyte was characterized by laser optical microscopy and focused ion beam-scanning electron microscopy. Ni depletion at the anode/electrolyte interface region was observed after 100 h discharge tests. In addition, the long-term stability of the single cell was evaluated at 700°C for 3000 h. After an initial decline, the anode-supported single cell exhibits good durability with a voltage decay rate of 0.72%/kh and an electrode polarization resistance decay rate of 0.17%/kh. The main performance loss of the cell originates from the initial degradation.
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