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<p>Alkaline water electrolysis is a well-known process with a lot of promise for producing renewable energy, but it needs the right catalyst. The effectiveness of water electrolysis can be greatly improved with the right electrocatalyst. In order to catalyse the oxygen evolution reaction (OER), a multifunctional electrocatalyst made of aluminum sulfide–anchored graphene oxide (Al₂S₃/GO) was created using a hydrothermal process. The produced catalyst’s varied morphology and good crystallinity were validated by the physical characterization performed using XRD and SEM. In 1 M KOH, electrochemical performance was assessed using three-electrode system. The Al₂S₃/GO nanocomposite demonstrated a small Tafel slope of 35.4 mV dec<sup>−1</sup>, a low overpotential of 218 mV at 10 mA cm<sup>−</sup>², and steady operating at elevated current densities up to 50 mA cm<sup>−</sup>². Additionally, after 5000 CV cycles, it maintained 92% of its starting current. The Al₂S₃/GO catalyst is stable, economical, and useful option for OER in alkaline solution, according to the overall results.</p><p></p>

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Hydrothermal synthesis of carbon based Al2S3 nanocomposite as an excellent electrocatalyst for OER

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Simal Zahra,
  • Monizah Nazim,
  • Haifa A. Alyousef,
  • B. M. Alotaibi,
  • Eman Alzahrani,
  • Albandari. W. Alrowaily,
  • Hidayath Mirza,
  • Abhinav Kumar

摘要

Alkaline water electrolysis is a well-known process with a lot of promise for producing renewable energy, but it needs the right catalyst. The effectiveness of water electrolysis can be greatly improved with the right electrocatalyst. In order to catalyse the oxygen evolution reaction (OER), a multifunctional electrocatalyst made of aluminum sulfide–anchored graphene oxide (Al₂S₃/GO) was created using a hydrothermal process. The produced catalyst’s varied morphology and good crystallinity were validated by the physical characterization performed using XRD and SEM. In 1 M KOH, electrochemical performance was assessed using three-electrode system. The Al₂S₃/GO nanocomposite demonstrated a small Tafel slope of 35.4 mV dec−1, a low overpotential of 218 mV at 10 mA cm−², and steady operating at elevated current densities up to 50 mA cm−². Additionally, after 5000 CV cycles, it maintained 92% of its starting current. The Al₂S₃/GO catalyst is stable, economical, and useful option for OER in alkaline solution, according to the overall results.