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<p>The tungsten-based oxides have emerged as a potential electrocatalyst for (HER) hydrogen evolution reaction as well as (OER) oxygen evolution reaction. Notably, catalytic potential of tungsten oxides in the OER has yet to be studied. In present work, we offer a new nanoarray-structured electrode composed of BiLaWO<sub>6</sub>/PPY. In alkaline conditions, this unique electrode catalyzes both the OER and HER with excellent stability and efficiency. In comparison to the reversible hydrogen electrode, BiLaWO<sub>6</sub>/PPY nanoarray structure considerably increase hydrogen gas release from the electrode, generating a remarkable current density of 10&#xa0;mA cm<sup>− 2</sup> at an initial potential of 245 mV with a 78 mV overpotential for HER. Furthermore, this BiLaWO<sub>6</sub>/PPY nanocomposite displays Tafel slope of 64 mVdec<sup>− 1</sup>. On other hand, the BiLaWO<sub>6</sub>/PPY nanoarray shows good OER activity having 1.42 onset potential with overpotential of 244 mV. In order to validate the reaction process using current density of 10&#xa0;mA cm<sup>− 2</sup>, additionally, resulting material displays a Tafel slope (34 mVdec<sup>− 1</sup>)for OER. This demonstrates that it is a promising non-noble metal catalyst for green water splitting using 1&#xa0;M KOH. Consequently, the implementation of BiLaWO<sub>6</sub>/PPY nanoarray in the context of this research signifies an innovative strategy for advancing OER electrocatalysts and other devices utilized in energy conversion and storage system.</p>

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Advancing approaches for designing high-performance BiLaWO6/PPY nanocomposite for water splitting

  • 期刊论文

  • 发表日期：

    2025年2月24日

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  • Nouf H. Alotaibi,
  • Khawar Abbas,
  • Mehar Un Nisa,
  • Saikh Mohammad,
  • Shahroz Saleem,
  • Muhammad Khalil,
  • Abdul Ghafoor Abid

摘要

The tungsten-based oxides have emerged as a potential electrocatalyst for (HER) hydrogen evolution reaction as well as (OER) oxygen evolution reaction. Notably, catalytic potential of tungsten oxides in the OER has yet to be studied. In present work, we offer a new nanoarray-structured electrode composed of BiLaWO6/PPY. In alkaline conditions, this unique electrode catalyzes both the OER and HER with excellent stability and efficiency. In comparison to the reversible hydrogen electrode, BiLaWO6/PPY nanoarray structure considerably increase hydrogen gas release from the electrode, generating a remarkable current density of 10 mA cm− 2 at an initial potential of 245 mV with a 78 mV overpotential for HER. Furthermore, this BiLaWO6/PPY nanocomposite displays Tafel slope of 64 mVdec− 1. On other hand, the BiLaWO6/PPY nanoarray shows good OER activity having 1.42 onset potential with overpotential of 244 mV. In order to validate the reaction process using current density of 10 mA cm− 2, additionally, resulting material displays a Tafel slope (34 mVdec− 1)for OER. This demonstrates that it is a promising non-noble metal catalyst for green water splitting using 1 M KOH. Consequently, the implementation of BiLaWO6/PPY nanoarray in the context of this research signifies an innovative strategy for advancing OER electrocatalysts and other devices utilized in energy conversion and storage system.