Developing abundant rare-earth iron perovskite electrodes for high-performance and low-cost solid oxide fuel cells
Kai Song,
Fang Wang,
Jinqiu Zhang,
Biao Niu,
Cheng Cheng Wang,
Halefom G. Desta,
Xing Gao,
Dong Tian,
Yihan Ling,
Bin Lin
Affiliations
Kai Song
School of Materials Science and Engineering, Changchun University of Science and Technology, No. 7989 Weixing Road, Changchun 130022, China; Zhongshan Institute of Changchun University of Science and Technology, No. 16 Huizhandong Road, Huoju Development District, Zhongshan 528437, China; Anhui Province Key Laboratory of Low-Temperature Co-Fired Materials, Huainan Normal University, Huainan 232038, China
Fang Wang
School of Materials Science and Engineering, Changchun University of Science and Technology, No. 7989 Weixing Road, Changchun 130022, China; Zhongshan Institute of Changchun University of Science and Technology, No. 16 Huizhandong Road, Huoju Development District, Zhongshan 528437, China; Corresponding author
Jinqiu Zhang
School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
Biao Niu
School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
Cheng Cheng Wang
Shen Zhen Polytechnic University, Shenzhen 518055, China
Halefom G. Desta
School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Xing Gao
Anhui Province Key Laboratory of Low-Temperature Co-Fired Materials, Huainan Normal University, Huainan 232038, China
Dong Tian
Anhui Province Key Laboratory of Low-Temperature Co-Fired Materials, Huainan Normal University, Huainan 232038, China
Yihan Ling
School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; Corresponding author
Bin Lin
Anhui Province Key Laboratory of Low-Temperature Co-Fired Materials, Huainan Normal University, Huainan 232038, China; School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China; Corresponding author
Summary: The swift advancement of the solid oxide fuel cell (SOFC) sector necessitates a harmony between electrode performance and commercialization cost. The economic value of elements is frequently linked to their abundance in the Earth’s crust. Here, we develop abundant rare-earth iron perovskite electrodes of Ln0.6Sr0.4FeO3-δ (Ln = La, Pr, and Nd) with high abundant rare-earth metals and preferred iron metal for SOFCs. All three symmetric electrode materials display a cubic perovskite phase and excellent chemical compatibility with Gd0.2Ce0.8O2-δ electrolyte. All three electrodes possess exceptional surface oxygen exchange ability. At 800°C, single cells with La0.6Sr0.4FeO3-δ, Pr0.6Sr0.4FeO3-δ, and Nd0.6Sr0.4FeO3-δ symmetric electrodes attained excellent open circuit voltages of 1.108, 1.101, and 1.097 V, respectively, as well as peak powers of 213.52, 281.12, and 254.58 mW cm−2. The results suggest that overall performance of abundant rare-earth iron perovskite electrodes has a favorable impact on the extensive expansion of SOFCs, presenting significant potential for practical applications.
