Scholarlink

<p>Materials with enhanced conductivity and energy density are needed for high-performance polymer-based nanocomposites for energy storage. The synergistic impacts of graphene nanoplatelets (GNPs) and two-dimensional (2D) Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene hybrids (GMHs) reinforced with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) nanocomposites on electrical conductivity, dielectric characteristics, and ferroelectric performance are investigated in this work. Strong interactions between the fillers and polymer matrix that encourage higher crystallinity and β-phase content are confirmed by the structural and vibrational spectra. The addition of GMHs improves the charge transfer and lowers the percolation threshold by forming an interconnected percolative network inside the polymer matrix. Interfacial polarization and Maxwell–Wagner–Sillars effects cause the dielectric constant to rise to 67.5 at 100&#xa0;Hz for 4 wt.% loading, while impedance spectroscopy yields a high electrical conductivity of 1.7 × 10<sup>−3</sup>&#xa0;S/m. Additionally, the composite exhibits improved charge–discharge efficiency, enabling higher power densities (15.7&#xa0;W/m<sup>3</sup>) and energy densities (3.61&#xa0;J/m<sup>3</sup>). The results demonstrate the synergistic effect of nanohybrids in enhancing the electrical characteristics of PVDF-HFP composites, which makes them suitable for flexible energy storage devices.</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

Multifunctional Properties of PVDF-HFP Composites with 2D MXene-GNP Hybrids for Energy Storage Applications

  • 期刊论文

  • 发表日期：

    2025年8月14日

查看全文
  • Nitesh Kumar Nath,
  • Rajanikanta Parida,
  • Nimai Charan Nayak

摘要

Materials with enhanced conductivity and energy density are needed for high-performance polymer-based nanocomposites for energy storage. The synergistic impacts of graphene nanoplatelets (GNPs) and two-dimensional (2D) Ti3C2Tx MXene hybrids (GMHs) reinforced with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) nanocomposites on electrical conductivity, dielectric characteristics, and ferroelectric performance are investigated in this work. Strong interactions between the fillers and polymer matrix that encourage higher crystallinity and β-phase content are confirmed by the structural and vibrational spectra. The addition of GMHs improves the charge transfer and lowers the percolation threshold by forming an interconnected percolative network inside the polymer matrix. Interfacial polarization and Maxwell–Wagner–Sillars effects cause the dielectric constant to rise to 67.5 at 100 Hz for 4 wt.% loading, while impedance spectroscopy yields a high electrical conductivity of 1.7 × 10−3 S/m. Additionally, the composite exhibits improved charge–discharge efficiency, enabling higher power densities (15.7 W/m3) and energy densities (3.61 J/m3). The results demonstrate the synergistic effect of nanohybrids in enhancing the electrical characteristics of PVDF-HFP composites, which makes them suitable for flexible energy storage devices.