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<p>Ca- and Ti-substituted perovskite La<sub>0.80</sub>Ca<sub>0.20</sub>Mn<sub>0.80</sub>Ti<sub>0.20</sub>O<sub>3</sub> is assessed as a cathode material for SOFCs. Structural analysis shows an orthorhombic structure (Pbnm space group) with 15–20&#xa0;nm pores. Thermal analysis reveals weight loss above 600&#xa0;°C and a thermal expansion coefficient of 12.5 × 10<sup>–6</sup>&#xa0;K<sup>−1</sup>. Electrochemical analysis shows conductivity of 174&#xa0;S&#xa0;cm<sup>−1</sup> at 800&#xa0;°C, activation energy of 0.41&#xa0;eV, and minimum polarization resistance (<i>R</i><sub>p</sub>) of 0.0112&#xa0;Ω&#xa0;cm<sup>2</sup> at 700&#xa0;°C. Therefore, Sr and Ti co-doped LaMnO<sub>3</sub> perovskite can be used as a promising SOFC cathode.</p> Graphical Abstract <p></p>

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Effective Ca and Ti co-doping in La0.80Ca0.20Mn0.80Ti0.20O3 perovskite as high-performance cathode material for solid oxide fuel cells

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Aman Sen,
  • Surinder Paul

摘要

Ca- and Ti-substituted perovskite La0.80Ca0.20Mn0.80Ti0.20O3 is assessed as a cathode material for SOFCs. Structural analysis shows an orthorhombic structure (Pbnm space group) with 15–20 nm pores. Thermal analysis reveals weight loss above 600 °C and a thermal expansion coefficient of 12.5 × 10–6 K−1. Electrochemical analysis shows conductivity of 174 S cm−1 at 800 °C, activation energy of 0.41 eV, and minimum polarization resistance (Rp) of 0.0112 Ω cm2 at 700 °C. Therefore, Sr and Ti co-doped LaMnO3 perovskite can be used as a promising SOFC cathode.

Graphical Abstract