Scholarlink

<p>Perovskite‑type La<sub>0.6</sub>Sr<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3</sub> (LSCF6428) was synthesized using sol–gel (Sol-LSCF6428) and glycine combustion (Gly-LSCF6428) methods. A comparative analysis was conducted on the microstructure, elemental valence states, specific surface area, and electrochemical properties of LSCF6428 produced by each synthesis route. Structural analysis confirmed that Gly-LSCF6428 exhibited superior crystallinity, optimized microstructure, abundant oxygen vacancies and mesoporous distribution and higher specific surface area. Electrochemical testing in a three-electrode setup with 1&#xa0;M Na<sub>2</sub>SO<sub>4</sub> electrolyte revealed that Gly-LSCF6428 outperformed Sol-LSCF6428. Gly-LSCF6428 achieves a specific capacitance of approximately 168 F g⁻<sup>1</sup> compared to 139 F g⁻<sup>1</sup> of Sol-LSCF6428 at 2&#xa0;mV&#xa0;s⁻<sup>1</sup> scan rate. Gly-LSCF6428 also exhibits remarkable cycle stability of 99.4% retention after 5000 cycles(at 3 A g<sup>−1</sup>). In a 6&#xa0;M KOH electrolyte, the Gly-LSCF6428 electrode exhibits a high specific capacitance of 266 F g<sup>−1</sup> at a current density of 1 A g⁻<sup>1</sup>, along with a low internal resistance (R<sub>s</sub> = 0.48 Ω). In addition, the Gly-LSCF6428//Gly-LSCF6428 symmetric supercapacitor provides an energy density of 3.74 Wh kg<sup>−1</sup> at a power density of 500 W kg<sup>−1</sup>. These findings suggest that the properties of LSCF6428 can be effectively tuned through synthesis methods, making it a promising candidate for energy storage applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of synthesis methods on the electrochemical performance of perovskite‑type La0.6Sr0.4Co0.2Fe0.8O3 as supercapacitor electrode material

  • 期刊论文

  • 发表日期：

    2025年6月30日

查看全文
  • YaXin Zhang,
  • DongQing Luo,
  • YaoHui Zhang,
  • JingBo Lv

摘要

Perovskite‑type La0.6Sr0.4Co0.2Fe0.8O3 (LSCF6428) was synthesized using sol–gel (Sol-LSCF6428) and glycine combustion (Gly-LSCF6428) methods. A comparative analysis was conducted on the microstructure, elemental valence states, specific surface area, and electrochemical properties of LSCF6428 produced by each synthesis route. Structural analysis confirmed that Gly-LSCF6428 exhibited superior crystallinity, optimized microstructure, abundant oxygen vacancies and mesoporous distribution and higher specific surface area. Electrochemical testing in a three-electrode setup with 1 M Na2SO4 electrolyte revealed that Gly-LSCF6428 outperformed Sol-LSCF6428. Gly-LSCF6428 achieves a specific capacitance of approximately 168 F g⁻1 compared to 139 F g⁻1 of Sol-LSCF6428 at 2 mV s⁻1 scan rate. Gly-LSCF6428 also exhibits remarkable cycle stability of 99.4% retention after 5000 cycles(at 3 A g−1). In a 6 M KOH electrolyte, the Gly-LSCF6428 electrode exhibits a high specific capacitance of 266 F g−1 at a current density of 1 A g⁻1, along with a low internal resistance (Rs = 0.48 Ω). In addition, the Gly-LSCF6428//Gly-LSCF6428 symmetric supercapacitor provides an energy density of 3.74 Wh kg−1 at a power density of 500 W kg−1. These findings suggest that the properties of LSCF6428 can be effectively tuned through synthesis methods, making it a promising candidate for energy storage applications.