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<p>This study investigates the influence of calcination temperature on the structural, morphological, and electrochemical properties of La<sub>0.6</sub>Sr<sub>1.4</sub>MnO<sub>4</sub> (LSMO<sub>4</sub>) layered perovskite as a potential anode material for solid oxide fuel cells (SOFCs). LSMO<sub>4</sub> powders were synthesized using a citrate-nitrate combustion method and calcined at 900, 1000, and 1100 °C. X-ray diffraction confirmed the formation of a tetragonal K<sub>2</sub>NiF<sub>4</sub>-type Ruddlesden-Popper structure for all samples, while the material calcined at 900 °C exhibited the highest phase purity without detectable secondary phases. Increasing calcination temperature resulted in significant crystallite growth and a reduction in surface area as evidenced by BET, particle size analysis, and XRD results. The optimized sample calcined at 900 °C was selected for electrochemical evaluation, demonstrating an electrical conductivity of 12.61 S cm<sup>−1</sup> and an area specific resistance (ASR) of 11.30 Ω cm<sup>2</sup>. These results highlight the potential of phase-pure LSMO<sub>4</sub> as an SOFC anode material. Further improvements in electrode performance are expected through optimization of electrode microstructure and porosity, which are critical factors governing catalytic activity and fuel diffusion in SOFC anodes.</p><p></p>

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Influence of calcination temperature on the structural, morphological and electrochemical properties of La0.6Sr1.4MnO4 Ruddlesden-Popper perovskite anode for solid oxide fuel cell

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月20日

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  • Ainaa Nadhirah Zainon,
  • Nurul Akidah Baharuddin,
  • Bee Huah Lim,
  • Audi Majdan Kamarul Bahrain,
  • Mahendra Rao Somalu

摘要

This study investigates the influence of calcination temperature on the structural, morphological, and electrochemical properties of La0.6Sr1.4MnO4 (LSMO4) layered perovskite as a potential anode material for solid oxide fuel cells (SOFCs). LSMO4 powders were synthesized using a citrate-nitrate combustion method and calcined at 900, 1000, and 1100 °C. X-ray diffraction confirmed the formation of a tetragonal K2NiF4-type Ruddlesden-Popper structure for all samples, while the material calcined at 900 °C exhibited the highest phase purity without detectable secondary phases. Increasing calcination temperature resulted in significant crystallite growth and a reduction in surface area as evidenced by BET, particle size analysis, and XRD results. The optimized sample calcined at 900 °C was selected for electrochemical evaluation, demonstrating an electrical conductivity of 12.61 S cm−1 and an area specific resistance (ASR) of 11.30 Ω cm2. These results highlight the potential of phase-pure LSMO4 as an SOFC anode material. Further improvements in electrode performance are expected through optimization of electrode microstructure and porosity, which are critical factors governing catalytic activity and fuel diffusion in SOFC anodes.