Scholarlink

<p>Amid worsening energy shortages, the demand for clean energy and high-performance energy storage devices has surged, driving significant research interest in supercapacitor electrode materials. This study pioneered a novel hierarchical composite architecture integrating ball-milled <i>Melaleuca</i> bark-derived activated carbon (BAC) with nickel-cobalt layered double hydroxide (Ni-Co LDH) via a facile solvothermal method. Systematic optimization of synthesis parameters including the Ni: Co molar ratio, solvothermal reaction temperature/duration, and the BAC to NiCo-LDH mass ratio unveiled that controlled conditions induced a distinctive urchin-like spherical morphology, where vertically-aligned LDH microspheres uniformly anchor onto the porous BAC scaffold. This unique structure fosters a synergistic dual-function: BAC serves as a conductive backbone that mitigates LDH aggregation and enhances ion transport kinetics, while Ni₃Co₆-LDH delivers robust pseudocapacitance. Crucially, the optimal BAC/Ni<sub>3</sub>Co<sub>6</sub> composite achieved a remarkable specific capacitance of 587.5&#xa0;F g<sup>− 1</sup>, surpassing pristine BAC and Ni₃Co₆-LDH by 101.2% and 79.0%, respectively. Furthermore, the assembled asymmetric supercapacitor device demonstrated exceptional cycling stability, maintaining 99.7% coulombic efficiency after 6000 charge-discharge cycles. This work not only valorizes <i>Melaleuca</i> bark as a sustainable precursor for high-performance carbon materials but also establishes a rational design paradigm for engineering advanced biomass-derived composite electrodes.</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

In situ growth of NiCo-LDH on biomass carbon from Melaleuca bark as high-performance electrode material

  • 期刊论文

  • 发表日期：

    2026年1月27日

查看全文
  • Ting Yu,
  • Peiyuan Zhang,
  • Jiekai Chen,
  • Jiawei Zhang,
  • Lihui Chen,
  • Liulian Huang,
  • Hui Wu,
  • Xiaxing Zhou

摘要

Amid worsening energy shortages, the demand for clean energy and high-performance energy storage devices has surged, driving significant research interest in supercapacitor electrode materials. This study pioneered a novel hierarchical composite architecture integrating ball-milled Melaleuca bark-derived activated carbon (BAC) with nickel-cobalt layered double hydroxide (Ni-Co LDH) via a facile solvothermal method. Systematic optimization of synthesis parameters including the Ni: Co molar ratio, solvothermal reaction temperature/duration, and the BAC to NiCo-LDH mass ratio unveiled that controlled conditions induced a distinctive urchin-like spherical morphology, where vertically-aligned LDH microspheres uniformly anchor onto the porous BAC scaffold. This unique structure fosters a synergistic dual-function: BAC serves as a conductive backbone that mitigates LDH aggregation and enhances ion transport kinetics, while Ni₃Co₆-LDH delivers robust pseudocapacitance. Crucially, the optimal BAC/Ni3Co6 composite achieved a remarkable specific capacitance of 587.5 F g− 1, surpassing pristine BAC and Ni₃Co₆-LDH by 101.2% and 79.0%, respectively. Furthermore, the assembled asymmetric supercapacitor device demonstrated exceptional cycling stability, maintaining 99.7% coulombic efficiency after 6000 charge-discharge cycles. This work not only valorizes Melaleuca bark as a sustainable precursor for high-performance carbon materials but also establishes a rational design paradigm for engineering advanced biomass-derived composite electrodes.