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<p>Hydrogen production via water electrolysis is gaining attention as a method of renewable energy storage for its efficiency and eco-friendliness. However, efficient catalysts are still lacking to overcome the slow kinetics of the oxygen evolution reaction (OER). In this study, we synthesized a composite catalyst consisting of NiFe-layered double hydroxide (NiFe-LDH) and titanium carbide MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>) for catalyzing the oxygen evolution reaction in electrochemical water splitting. The composite catalyst was optimized through a plasma discharge treatment for introducing oxygen vacancy and integrating it with nickel foam (NF) as support. This optimized catalyst O<sub>v</sub>-NiFe-LDH/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>/NF exhibits remarkable catalytic activity and stability. At a current density of 100&#xa0;mA/cm<sup>2</sup>, the required overpotential is a mere 229&#xa0;mV, and it sustains high catalytic performance even after 20&#xa0;h of operation at a substantial current density of 1000&#xa0;mA/cm<sup>2</sup>. Our findings offer valuable insights into the development of efficient OER catalysts for water splitting applications.</p>

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OER Catalytic performances of self-supporting NiFe-LDH/Ti3C2Tx/NF composite modified by plasma discharge treatment

  • 期刊论文

  • 发表日期：

    2025年5月22日

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  • Sikai Peng,
  • Huimin Yu,
  • Ya Wen,
  • Weiliang Peng

摘要

Hydrogen production via water electrolysis is gaining attention as a method of renewable energy storage for its efficiency and eco-friendliness. However, efficient catalysts are still lacking to overcome the slow kinetics of the oxygen evolution reaction (OER). In this study, we synthesized a composite catalyst consisting of NiFe-layered double hydroxide (NiFe-LDH) and titanium carbide MXene (Ti3C2Tx) for catalyzing the oxygen evolution reaction in electrochemical water splitting. The composite catalyst was optimized through a plasma discharge treatment for introducing oxygen vacancy and integrating it with nickel foam (NF) as support. This optimized catalyst Ov-NiFe-LDH/Ti3C2Tx/NF exhibits remarkable catalytic activity and stability. At a current density of 100 mA/cm2, the required overpotential is a mere 229 mV, and it sustains high catalytic performance even after 20 h of operation at a substantial current density of 1000 mA/cm2. Our findings offer valuable insights into the development of efficient OER catalysts for water splitting applications.