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<p>The study of high performance and stable hierarchical cathodes is essential for practical applications of solid oxide fuel cells (SOFCs). This work presents a synergistic way to prepare hierarchical nano-sized cathodes, focusing on optimizing microstructural and electrochemical properties. By combining advanced fabrication techniques, including nanostructuring and surface engineering, we obtained an enhancement in PrBa<sub>0.5</sub>Sr<sub>0.5</sub>Co<sub>1.5</sub>Fe<sub>0.5</sub>O<sub>5+δ</sub> (PBSCF) cathodes. The electrochemical activities of LaCo<sub>0.6</sub>Ni<sub>0.4</sub>O<sub>3-δ</sub> (LCN) impregnated on PBSCF cathodes in SOFCs were fabricated. Here, an optimum coated amount of LCN-PBSCF electrode exhibited a smaller electrode polarization resistance (Rp) of 0.58 Ω cm<sup>2</sup> than that of pure PBSCF electrode with Rp of 1.23 Ω cm<sup>2</sup> operating at 700&#xa0;°C. With the temperature elevating from 600 to 800&#xa0;°C, LCN-PBSCF single cells presented a maximum power density (MPD) rising from 147.07 to 837.86 mW cm<sup>−2</sup>, substantially higher relative to pristine PBSCF cell (from 89.34 to 429.82 mW cm<sup>−2</sup>). These results elucidated a rational design of efficient PBSCF-based cathode by LCN impregnation for SOFC.</p>

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Synergistic preparation of nano-sized PrBa0.5Sr0.5Co1.5Fe0.5O5+δ-LaCo0.6Ni0.4O3-δ cathodes of solid oxide fuel cells

  • 期刊论文

  • 发表日期：

    2025年1月13日

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  • Bingxue Hou,
  • Jiali Xiang,
  • Lisha Liu,
  • Rui Tang,
  • Xintao Wang,
  • Zanxiong Tan,
  • Mortaza Gholizadeh,
  • Cheng Cheng Wang

摘要

The study of high performance and stable hierarchical cathodes is essential for practical applications of solid oxide fuel cells (SOFCs). This work presents a synergistic way to prepare hierarchical nano-sized cathodes, focusing on optimizing microstructural and electrochemical properties. By combining advanced fabrication techniques, including nanostructuring and surface engineering, we obtained an enhancement in PrBa0.5Sr0.5Co1.5Fe0.5O5+δ (PBSCF) cathodes. The electrochemical activities of LaCo0.6Ni0.4O3-δ (LCN) impregnated on PBSCF cathodes in SOFCs were fabricated. Here, an optimum coated amount of LCN-PBSCF electrode exhibited a smaller electrode polarization resistance (Rp) of 0.58 Ω cm2 than that of pure PBSCF electrode with Rp of 1.23 Ω cm2 operating at 700 °C. With the temperature elevating from 600 to 800 °C, LCN-PBSCF single cells presented a maximum power density (MPD) rising from 147.07 to 837.86 mW cm−2, substantially higher relative to pristine PBSCF cell (from 89.34 to 429.82 mW cm−2). These results elucidated a rational design of efficient PBSCF-based cathode by LCN impregnation for SOFC.