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<p>The overutilization of traditional fossil energy sources has led to increasingly severe environmental challenges, highlighting hydrogen as a promising alternative energy source. A key step toward the widespread adoption of hydrogen energy is the development of cost-effective materials with high catalytic performance for water splitting. In this study, Ru was incorporated into Co-BDC/NF to synthesize CoRu-BDC/NF (BDC = terephthalic acid, NF = nickel foam), optimizing its electrocatalytic properties. Performance evaluations revealed that CoRu-BDC/NF demonstrated outstanding hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activity in an alkaline solution, requiring only 68&#xa0;mV at 10&#xa0;mA/cm<sup>2</sup> for HER and 288&#xa0;mV at 50&#xa0;mA/cm<sup>2</sup> for OER, indicating low overpotential and strong stability. During overall water splitting, a voltage of 1.56&#xa0;V was adequate to achieve a current density of 10&#xa0;mA/cm<sup>2</sup>. As a bifunctional catalyst for both hydrogen and oxygen generation in electrolysis, CoRu-BDC/NF exhibited excellent electrocatalytic efficiency and durability, offering valuable insights into the design of Ru-doped bimetallic metal–organic frameworks (MOFs) for water-splitting applications.</p>

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Improving the electrocatalytic activity of Co-based metal–organic framework towards hydrogen evolution and oxygen evolution reactions through Ru doping

  • 期刊论文

  • 发表日期：

    2025年8月2日

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  • Junling Chen,
  • Tinghang Xu,
  • Qiang Liu,
  • Zhenzhen Shi,
  • Hanqing Lin,
  • Qingyao Lu,
  • Keliang Wu,
  • Tiexin Zhang

摘要

The overutilization of traditional fossil energy sources has led to increasingly severe environmental challenges, highlighting hydrogen as a promising alternative energy source. A key step toward the widespread adoption of hydrogen energy is the development of cost-effective materials with high catalytic performance for water splitting. In this study, Ru was incorporated into Co-BDC/NF to synthesize CoRu-BDC/NF (BDC = terephthalic acid, NF = nickel foam), optimizing its electrocatalytic properties. Performance evaluations revealed that CoRu-BDC/NF demonstrated outstanding hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activity in an alkaline solution, requiring only 68 mV at 10 mA/cm2 for HER and 288 mV at 50 mA/cm2 for OER, indicating low overpotential and strong stability. During overall water splitting, a voltage of 1.56 V was adequate to achieve a current density of 10 mA/cm2. As a bifunctional catalyst for both hydrogen and oxygen generation in electrolysis, CoRu-BDC/NF exhibited excellent electrocatalytic efficiency and durability, offering valuable insights into the design of Ru-doped bimetallic metal–organic frameworks (MOFs) for water-splitting applications.