Scholarlink

<p>Electrochemical nitrate upgrading presents a sustainable route for repairing unbalanced nitrogen cycle. However, the low energy efficiency caused by high overpotential impedes the industrialization progress. Herein, Ru clusters supported on metal hydroxide are constructed by a universal self-corrosion strategy, and the metal-support interaction is modulated to simultaneously optimize NO<sub>3</sub><sup>−</sup> adsorption and water dissociation for achieving high energy efficiency at positive potentials. The Co(OH)<sub>2</sub>-supported Ru with moderate metal-support interaction exhibits a high energy efficiency of 49.5% and a high NH<sub>3</sub> Faradaic efficiency of ~100% at positive potentials. Furthermore, a long-term stability over 1200 h is achieved at an industrial-scale current density of 200 mA cm<sup>−2</sup>. Moreover, the assembled rechargeable hybrid battery system shows a great potential in waste upcycling and energy conversion. This work underscores the significance of metal-support interaction for promoting nitrate electroreduction at positive potentials.</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

Modulated metal-support interactions for efficient nitrate electroreduction at positive potentials

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月21日

查看全文
  • Yixiang Tang,
  • Yuchi Wan,
  • Wei Yan,
  • Jiujun Zhang,
  • Ruitao Lv

摘要

Electrochemical nitrate upgrading presents a sustainable route for repairing unbalanced nitrogen cycle. However, the low energy efficiency caused by high overpotential impedes the industrialization progress. Herein, Ru clusters supported on metal hydroxide are constructed by a universal self-corrosion strategy, and the metal-support interaction is modulated to simultaneously optimize NO3− adsorption and water dissociation for achieving high energy efficiency at positive potentials. The Co(OH)2-supported Ru with moderate metal-support interaction exhibits a high energy efficiency of 49.5% and a high NH3 Faradaic efficiency of ~100% at positive potentials. Furthermore, a long-term stability over 1200 h is achieved at an industrial-scale current density of 200 mA cm−2. Moreover, the assembled rechargeable hybrid battery system shows a great potential in waste upcycling and energy conversion. This work underscores the significance of metal-support interaction for promoting nitrate electroreduction at positive potentials.