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<p>This research attempts to design a stable, proficient and innovative electrocatalytic material for the oxygen evolution reaction (OER), this advancement shows a promising potential for green energy, as it could lead to more effective, durable and economical solutions in the energy sector. In this work, NiS@SnAl<sub>2</sub>O<sub>4</sub> composite is synthesized using a hydrothermal technique and then coated on a nickel foam to boost the OER catalysis. The NiS@SnAl<sub>2</sub>O<sub>4</sub> nanocomposite exhibits remarkable OER performance, exhibiting a small overpotential of 228 mV with a lower Tafel slope (36 mV/dec) at 10&#xa0;mA/cm<sup>2</sup>, in contrast to pristine NiS and SnAl<sub>2</sub>O<sub>4</sub>. The composite maintains exceptional stability over 50&#xa0;h in the chronoamperometric test. This study demonstrates that the NiS/SnAl₂O₄ composite achieves enhanced OER activity, as confirmed by its lower overpotential, smaller Tafel slope, higher current density and reduced charge-transfer resistance, confirming the electrochemical enhancement achieved by combining both components. The introduced modified framework of SnAl<sub>2</sub>O<sub>4</sub> imparts exceptional electrical characteristics and strength to NiS. As a result, this study gives a broader prospective on the combined catalytic interaction of distinct nanomaterials in composite catalysts. It presents innovative ideas for future study and production of nanocatalysts in durable energy conversion methods.</p>

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Boosting the electrocatalytic activity towards OER via a composite comprising of NiS@SnAl2O4

  • 期刊论文

  • 发表日期：

    2026年3月16日

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  • Munaza Sadiq,
  • Haifa A. Alyousef,
  • Albandari . W. Alrowaily,
  • B. M. Alotaibi,
  • Hala M. Abo-Dief,
  • Rizwan Ul Hassan,
  • Hussain Sawwan,
  • Abhinav Kumar

摘要

This research attempts to design a stable, proficient and innovative electrocatalytic material for the oxygen evolution reaction (OER), this advancement shows a promising potential for green energy, as it could lead to more effective, durable and economical solutions in the energy sector. In this work, NiS@SnAl2O4 composite is synthesized using a hydrothermal technique and then coated on a nickel foam to boost the OER catalysis. The NiS@SnAl2O4 nanocomposite exhibits remarkable OER performance, exhibiting a small overpotential of 228 mV with a lower Tafel slope (36 mV/dec) at 10 mA/cm2, in contrast to pristine NiS and SnAl2O4. The composite maintains exceptional stability over 50 h in the chronoamperometric test. This study demonstrates that the NiS/SnAl₂O₄ composite achieves enhanced OER activity, as confirmed by its lower overpotential, smaller Tafel slope, higher current density and reduced charge-transfer resistance, confirming the electrochemical enhancement achieved by combining both components. The introduced modified framework of SnAl2O4 imparts exceptional electrical characteristics and strength to NiS. As a result, this study gives a broader prospective on the combined catalytic interaction of distinct nanomaterials in composite catalysts. It presents innovative ideas for future study and production of nanocatalysts in durable energy conversion methods.