Scholarlink

<p>NiFe-based layered double hydroxide (NiFe-LDH) nanosheets were hydrothermally anchored onto the surface of CoFe-based Prussian blue analogue (CoFe-PBA) nanocubes, resulting in the formation of core–shell-structured CoFe-PBA@NiFe-LDH. Electrochemical characterizations revealed that this material exhibits exceptional oxygen evolution reaction (OER) activity coupled with remarkable long-term stability in alkaline media. The optimized CoFe-PBA@NiFe-LDH catalyst achieves a low OER overpotential of 287&#xa0;mV to reach a current density of 10&#xa0;mA&#xa0;cm<sup>−2</sup>, accompanied by a favorable Tafel slope of 77&#xa0;mV dec<sup>−1</sup>. Notably, the catalyst can maintain the initial catalytic activity even after 18&#xa0;h of continuous operation, with its morphology and crystalline structure remaining well-preserved. The superb electrocatalytic performance is fundamentally attributed to the synergistic core–shell architecture, where the uniform decoration of NiFe-LDH nanosheets on CoFe-PBA nanocubes maximizes the exposure of abundant and highly accessible active sites while facilitating the mass transport of reactive intermediates.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Core–shell structured CoFe-PBA@NiFe-LDH as efficient electrocatalysts for oxygen evolution reaction

  • 期刊论文

  • 发表日期：

    2026年6月1日

查看全文
  • Guang-Long Wang,
  • Jun-Hui Cao,
  • Shu-Sen Hou,
  • Yu Zhang,
  • Hu Zhou,
  • Chun Ouyang,
  • Long-Feng Lin,
  • Yan-Xin Qiao,
  • Yi-Shan Jiang,
  • Qi-Chao Zhang

摘要

NiFe-based layered double hydroxide (NiFe-LDH) nanosheets were hydrothermally anchored onto the surface of CoFe-based Prussian blue analogue (CoFe-PBA) nanocubes, resulting in the formation of core–shell-structured CoFe-PBA@NiFe-LDH. Electrochemical characterizations revealed that this material exhibits exceptional oxygen evolution reaction (OER) activity coupled with remarkable long-term stability in alkaline media. The optimized CoFe-PBA@NiFe-LDH catalyst achieves a low OER overpotential of 287 mV to reach a current density of 10 mA cm−2, accompanied by a favorable Tafel slope of 77 mV dec−1. Notably, the catalyst can maintain the initial catalytic activity even after 18 h of continuous operation, with its morphology and crystalline structure remaining well-preserved. The superb electrocatalytic performance is fundamentally attributed to the synergistic core–shell architecture, where the uniform decoration of NiFe-LDH nanosheets on CoFe-PBA nanocubes maximizes the exposure of abundant and highly accessible active sites while facilitating the mass transport of reactive intermediates.