Dual Self-Assembled Nanocomposite Cathode for Protonic Ceramic Fuel Cells

被引：0
|
作者：
Yuan, Chunyu [1 ]
Tong, Xiaofeng [1 ]
Li, Chen [1 ]
Sun, Zesi [1 ]
Li, Ping [2 ]
Zhang, Yumeng [1 ]
Wang, Ningling [1 ]
Shen, Xuesong [3 ]
Zhan, Zhongliang [4 ]
Wang, Ligang [1 ]
机构：
[1] Institute of Energy Power Innovation, North China Electric Power University, Beijing,102206, China
[2] School of Environmental Science and Engineering, North China Electric Power University, Baoding,071003, China
[3] National Center of Technology Innovation for Fuel Cell, Shandong Guochuang Fuel Cell Technology Innovation Center Co., Ltd., Weifang,261000, China
[4] Key Laboratory of Precision and Intelligent Chemistry, Department of Materials Science and Technology, University of Science and Technology of China, Hefei,230026, China
来源：
Energy and Fuels | 2024年 / 38卷 / 03期
基金：
国家重点研发计划;
关键词：
Protonic ceramic fuel cells (PCFCs) show great promise as a technology for clean power generation. However; the sluggish reaction kinetics and instability of the cathodes continue to impede their commercialization. Here; we report a multiphase nanocomposite produced through dual self-assembly; which serves as a highly active and durable cathode for PCFCs. During cathode sintering; self-assembly takes place to create a composite consisting of PrNi0.5Co0.5O3‑δ (PNC); BaCe0.7Zr0.1Y0.2O3‑δ; (BCZY); and PrOx nanoparticles. Compared to the single-phase PNC cathode; this cathode demonstrates enhanced performance with a reduction of 49.1% in ohmic resistance and 48.5% in polarization resistance at 700 °C. This outcome is attributed to improved oxygen surface exchange kinetics and electrolyte−cathode interface strength. Furthermore; the self-assembled cathode in the single cell exhibits a 33.3% increase in power output relative to that of the PNC cathode cell. More interestingly; the cell displays performance activation during 400 h of operation; resulting in a power output increase of 27.5%. The cathode is revealed to be further self-assembled during operation in the post-mortem analysis; featuring an in situ-formed needle-like nanocomposite composed of BaPrO3 and BCZY. This work presents an innovative approach to nanocomposite self-assembly for potential use in PCFC cathode applications.(Figure Presented). © 2024 American Chemical Society;
D O I：
10.1021/ACS.ENERGYFUELS.3C04882
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页码：2396 / 2403
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