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

Xin Yang; Zhihong Du; Qian Zhang; Zewei Lyu; Shixue Liu; Zhijing Liu; Minfang Han; Hailei Zhao

doi:10.1007/s12613-023-2616-7

Volume 30 Issue 6

Jun. 2023

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 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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Research Article

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

+ Author Affiliations

Corresponding authors:
Zhihong Du E-mail: zhihongdu@ustb.edu.cn

Hailei Zhao E-mail: hlzhao@ustb.edu.cn
Received: 13 December 2022; Revised: 16 January 2023; Accepted: 17 February 2023; Available online: 18 February 2023

Abstract

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.
- solid oxide fuel cell;
- Ni–YSZ anode;
- focused ion beam;
- Ni migration;
- electrochemical performance

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