Scholarlink

<p>In this work, we prepared nano SiC embedded Ni-Co-P nanohybrid (NCP-SiC) by one-step composite electrodeposition on nickel foam. Meanwhile, we evaluated their enhanced electrocatalytic performance toward hydrogen and oxygen evolution reaction (HER and OER) and overall water splitting in an alkaline aqueous solution compared with NCP. The studies show the NCP-SiC nanohybrid electrocatalysts composed of bimetallic Ni-Co/Ni<sub>2</sub>P/CoP nanohybrid encapsulating nano SiC, taking a coral shape, which has an overpotential of only 71 mV at a current density of 10&#xa0;mA/cm<sup>2</sup> and a Tafel slope of 32.5 mV/dec. Moreover, NCP-SiC electrocatalysts possess bifunctional catalytic characteristics with an overall water-separation overpotential of only 1.57&#xa0;V. These excellent electrocatalytic performances result from the incorporating effect of the nano SiC with the Ni-Co-P nanohybrids that own unique morphology and structure features. The resulting heterostructures accelerated the electron transfer, increased the active sites on the surface, and reduced the required activation energy, which leads to improved electrocatalytic activity. This work provides a workable strategy for semiconductor materials in improving total hydrolysis for hydrogen production applications.</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

SiC embedded in coral-shaped Ni-Co-P nanohybrids for enhanced overall water electrolysis performance

  • 期刊论文

  • 发表日期：

    2025年3月28日

查看全文
  • Xin-Ping Wang,
  • Ming-Xing Yu,
  • Xing-Hao Qu,
  • Gui-Mei Shi,
  • Xiao-Lei Wang

摘要

In this work, we prepared nano SiC embedded Ni-Co-P nanohybrid (NCP-SiC) by one-step composite electrodeposition on nickel foam. Meanwhile, we evaluated their enhanced electrocatalytic performance toward hydrogen and oxygen evolution reaction (HER and OER) and overall water splitting in an alkaline aqueous solution compared with NCP. The studies show the NCP-SiC nanohybrid electrocatalysts composed of bimetallic Ni-Co/Ni2P/CoP nanohybrid encapsulating nano SiC, taking a coral shape, which has an overpotential of only 71 mV at a current density of 10 mA/cm2 and a Tafel slope of 32.5 mV/dec. Moreover, NCP-SiC electrocatalysts possess bifunctional catalytic characteristics with an overall water-separation overpotential of only 1.57 V. These excellent electrocatalytic performances result from the incorporating effect of the nano SiC with the Ni-Co-P nanohybrids that own unique morphology and structure features. The resulting heterostructures accelerated the electron transfer, increased the active sites on the surface, and reduced the required activation energy, which leads to improved electrocatalytic activity. This work provides a workable strategy for semiconductor materials in improving total hydrolysis for hydrogen production applications.