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<p>Transition metals have been widely explored in electrochemical energy conversion application due to their variable oxidation states. An electrocatalyst for hydrogen evolution is reported using non-stoichiometric two dimensional transition metal dichalcogenide, MoS<sub>2 + δ</sub> and MoO<sub>3</sub> works as a highly efficient nano-composite. Here we report on the performance of nanostructured composites of MoO<sub>3</sub>-MoS<sub>2+δ</sub> as a electrocatalyst for hydrogen evolution from water electrolysis. Low cost hydrothermal method has been adopted for the synthesis purpose. The MoO<sub>3</sub>-MoS<sub>2+δ</sub> composite with a very low onset potential reduces the overpotential approximately to half of its value compare to the bare MoO<sub>3</sub>. The MoO<sub>3</sub>-MoS<sub>2+δ</sub> composite provides a current density of about 10&#xa0;mA/cm<sup>2</sup> at 400mV.</p>

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Electrocatalytic H2 evolution using MoS2+δ-MoO3 nanocomposite

  • 期刊论文

  • 发表日期：

    2025年7月8日

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  • Naznin Shaikh,
  • Nikita Thakkar,
  • Abhijit Ray

摘要

Transition metals have been widely explored in electrochemical energy conversion application due to their variable oxidation states. An electrocatalyst for hydrogen evolution is reported using non-stoichiometric two dimensional transition metal dichalcogenide, MoS2 + δ and MoO3 works as a highly efficient nano-composite. Here we report on the performance of nanostructured composites of MoO3-MoS2+δ as a electrocatalyst for hydrogen evolution from water electrolysis. Low cost hydrothermal method has been adopted for the synthesis purpose. The MoO3-MoS2+δ composite with a very low onset potential reduces the overpotential approximately to half of its value compare to the bare MoO3. The MoO3-MoS2+δ composite provides a current density of about 10 mA/cm2 at 400mV.