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<p>This study explores the development of a La<sub>0.6</sub>Sr<sub>0.4</sub>CoO<sub>3</sub> (LSC) coating on nickel (Ni) foam using a scalable dip-coating technique to enhance energy storage performance. X-ray diffraction confirmed successful LSC deposition, while scanning electron microscopy revealed uniform coating with significant porosity, with enhanced surface area. X-ray photoelectron spectroscopy revealed that Sr doping at A site resulted in charge shift at B site (Co<sup>2+</sup>/ Co<sup>3+</sup>) which accelerates Faradaic reactions during charge storage. Electrochemical characterization in a 3-electrode cell with 1&#xa0;M KOH showed that the three-layer LSC coating (C3) achieved the highest specific capacitance of 259&#xa0;F g<sup>− 1</sup> at 1&#xa0;A g<sup>− 1</sup>, with energy and power densities of 12.58 Wh kg<sup>− 1</sup> and 0.30&#xa0;kW kg<sup>− 1</sup>, respectively. Furthermore, C3 in symmetric cell assembly, exhibited energy and power densities of 18.99 Wh kg<sup>− 1</sup> and 1.80&#xa0;kW kg<sup>− 1</sup> with capacitance retention of 85% at 10&#xa0;A g<sup>− 1</sup> after 3,000 charge-discharge cycles. Cyclic voltammetry indicated diffusion-controlled charge storage with minor capacitive contributions, suggesting potential of LSC as an efficient supercapacitor electrode material. This study revealed that dip-coating, characterized by its reproducibility, low material waste, and ease of scale-up, provides a sustainable and economical route for fabricating next-generation electrodes, helping to translate laboratory advances into industrial practice.</p>

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Tunable electrochemical properties of La0.6Sr0.4CoO3 coatings via controlled layer deposition for high-performance supercapacitors

  • 期刊论文

  • 发表日期：

    2026年3月17日

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  • Zaeem Ur Rehman,
  • Katarzyna Ostrowska,
  • Piotr Jasinski,
  • Sebastian Molin

摘要

This study explores the development of a La0.6Sr0.4CoO3 (LSC) coating on nickel (Ni) foam using a scalable dip-coating technique to enhance energy storage performance. X-ray diffraction confirmed successful LSC deposition, while scanning electron microscopy revealed uniform coating with significant porosity, with enhanced surface area. X-ray photoelectron spectroscopy revealed that Sr doping at A site resulted in charge shift at B site (Co2+/ Co3+) which accelerates Faradaic reactions during charge storage. Electrochemical characterization in a 3-electrode cell with 1 M KOH showed that the three-layer LSC coating (C3) achieved the highest specific capacitance of 259 F g− 1 at 1 A g− 1, with energy and power densities of 12.58 Wh kg− 1 and 0.30 kW kg− 1, respectively. Furthermore, C3 in symmetric cell assembly, exhibited energy and power densities of 18.99 Wh kg− 1 and 1.80 kW kg− 1 with capacitance retention of 85% at 10 A g− 1 after 3,000 charge-discharge cycles. Cyclic voltammetry indicated diffusion-controlled charge storage with minor capacitive contributions, suggesting potential of LSC as an efficient supercapacitor electrode material. This study revealed that dip-coating, characterized by its reproducibility, low material waste, and ease of scale-up, provides a sustainable and economical route for fabricating next-generation electrodes, helping to translate laboratory advances into industrial practice.