SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 56 ›› Issue (4): 25-32.DOI: 10.1016/j.cjche.2022.08.023

• Full Length Article • 上一篇    下一篇

A Ruddlesden–Popper oxide as a carbon dioxide tolerant cathode for solid oxide fuel cells that operate at intermediate temperatures

Shujun Peng1, Song Lei2, Sisi Wen2, Jian Xue2, Haihui Wang3   

  1. 1. School of Chemistry & Chemical Engineering, Jinggangshan University, Ji'an 343009, China;
    2. School of Chemistry & Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, China;
    3. Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • 收稿日期:2022-05-18 修回日期:2022-08-06 出版日期:2023-04-28 发布日期:2023-06-13
  • 通讯作者: Jian Xue,E-mail:xuejian@scut.edu.cn
  • 基金资助:
    The authors greatly acknowledge the financial support by the National Key Research and Development Program of China (2020YFB1505603), the National Natural Science Foundation of China (22075086), the Guangdong Basic and Applied Basic Research Foundation (2020A1515011157, 2022A1515010980) and the Doctor Scientific Research Startup Foundation of Jinggangshan University (JZB1324).

A Ruddlesden–Popper oxide as a carbon dioxide tolerant cathode for solid oxide fuel cells that operate at intermediate temperatures

Shujun Peng1, Song Lei2, Sisi Wen2, Jian Xue2, Haihui Wang3   

  1. 1. School of Chemistry & Chemical Engineering, Jinggangshan University, Ji'an 343009, China;
    2. School of Chemistry & Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, China;
    3. Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2022-05-18 Revised:2022-08-06 Online:2023-04-28 Published:2023-06-13
  • Contact: Jian Xue,E-mail:xuejian@scut.edu.cn
  • Supported by:
    The authors greatly acknowledge the financial support by the National Key Research and Development Program of China (2020YFB1505603), the National Natural Science Foundation of China (22075086), the Guangdong Basic and Applied Basic Research Foundation (2020A1515011157, 2022A1515010980) and the Doctor Scientific Research Startup Foundation of Jinggangshan University (JZB1324).

摘要: Solid oxide fuel cells (SOFCs) that operate at intermediate temperatures of 600 to 800 ℃ have recently received increased attention due to their improved durability, more rapid startup and shutdown, better sealing and lower cost than their counterparts operate at high temperatures. Nevertheless, intermediate-temperature SOFCs (IT-SOFCs) with popular perovskite cathodes contain alkaline-earth elements, which are prone to reaction with carbon dioxide (CO2), even when the CO2 content is comparatively low. In this work, an alkaline-earth metal-free Ruddlesden–Popper oxide, Nd1.8La0.2Ni0.74Cu0.21Ga0.05O (NLNCG), is developed for IT-SOFC cathodes. The cell is based on an electrolyte with 8% (mol) Y2O3-stabilized ZrO2 (8YSZ). The NLNCG cathode exhibits an excellent CO2 tolerance, as proven by thermogravimetry analysis, in situ X-ray diffraction, I-V-P test, and electrochemical impedance spectroscopy (EIS), and stability measurements. The anode-supported single-cell NiO-YSZ|YSZ|NLNCG outputs a peak power density of 0.522 W·cm-2 at 800 ℃. These findings suggest that NLNCG could be a highly suitable cathode material with CO2 tolerance for IT-SOFCs.

关键词: Fuel cell, Hydrogen, Kinetics, Catalyst, CO2 tolerance

Abstract: Solid oxide fuel cells (SOFCs) that operate at intermediate temperatures of 600 to 800 ℃ have recently received increased attention due to their improved durability, more rapid startup and shutdown, better sealing and lower cost than their counterparts operate at high temperatures. Nevertheless, intermediate-temperature SOFCs (IT-SOFCs) with popular perovskite cathodes contain alkaline-earth elements, which are prone to reaction with carbon dioxide (CO2), even when the CO2 content is comparatively low. In this work, an alkaline-earth metal-free Ruddlesden–Popper oxide, Nd1.8La0.2Ni0.74Cu0.21Ga0.05O (NLNCG), is developed for IT-SOFC cathodes. The cell is based on an electrolyte with 8% (mol) Y2O3-stabilized ZrO2 (8YSZ). The NLNCG cathode exhibits an excellent CO2 tolerance, as proven by thermogravimetry analysis, in situ X-ray diffraction, I-V-P test, and electrochemical impedance spectroscopy (EIS), and stability measurements. The anode-supported single-cell NiO-YSZ|YSZ|NLNCG outputs a peak power density of 0.522 W·cm-2 at 800 ℃. These findings suggest that NLNCG could be a highly suitable cathode material with CO2 tolerance for IT-SOFCs.

Key words: Fuel cell, Hydrogen, Kinetics, Catalyst, CO2 tolerance