Scholarlink

<p>The extensive use of wireless communication devices has resulted in severe electromagnetic interference (EMI), which has driven the need for advanced EMI shielding materials. In this study, a twin-coated skeleton hybrid aerogel was constructed from <i>para</i>-aramid nanofibers (<i>p</i>-ANFs), MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>) flakes, and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) chains via a freeze-drying route. The robust chains of <i>p</i>-ANFs established a skeleton with a unique porous structure and reversible compressibility. The twin-coated cloth was composed of 28 wt% PEDOT:PSS and 20 wt% MXene, which endowed the PEDOT:PSS/MXene/<i>p</i>-ANFs hybrid aerogel with efficient EMI shielding properties. The shielding effectiveness (SE) and specific shielding effectiveness (SEE/t) in the X band (8.2–12.4&#xa0;GHz) reached 41.27&#xa0;dB and 3063.7&#xa0;dB·cm<sup>2</sup>·g<sup>−1</sup>, respectively. Interestingly, the EMI shielding capacity was controlled by the PEDOT:PSS and MXene contents and the PEDOT:PSS/MXene ratio. Moreover, the twin-coated hybrid aerogel exhibited outstanding compressive resilience, with a maximum compressive stress of 61.72&#xa0;kPa under strain of 60% after 500 cycles. In addition, the relationship between the structure deformation and power coefficient of aerogels was constructed. Thus, this study provides a feasible route for fabricating aerogels with compressibility and efficient EMI shielding performance.</p> Graphical Abstract <p></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

Twin-coated skeleton PEDOT: PSS/MXene/para-aramid nanofibers hybrid aerogel with efficient EMI shielding performance and tunable power coefficient

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年3月5日

查看全文
  • Fengfeng Jia,
  • Zhaoqing Lu,
  • Tao Huang,
  • Mingyuan Xu,
  • Xiaoxu Xu,
  • Zizhan Guo,
  • Shan Wang,
  • Jiayue Dong,
  • Yajie Kou,
  • Li Hua

摘要

The extensive use of wireless communication devices has resulted in severe electromagnetic interference (EMI), which has driven the need for advanced EMI shielding materials. In this study, a twin-coated skeleton hybrid aerogel was constructed from para-aramid nanofibers (p-ANFs), MXene (Ti3C2Tx) flakes, and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) chains via a freeze-drying route. The robust chains of p-ANFs established a skeleton with a unique porous structure and reversible compressibility. The twin-coated cloth was composed of 28 wt% PEDOT:PSS and 20 wt% MXene, which endowed the PEDOT:PSS/MXene/p-ANFs hybrid aerogel with efficient EMI shielding properties. The shielding effectiveness (SE) and specific shielding effectiveness (SEE/t) in the X band (8.2–12.4 GHz) reached 41.27 dB and 3063.7 dB·cm2·g−1, respectively. Interestingly, the EMI shielding capacity was controlled by the PEDOT:PSS and MXene contents and the PEDOT:PSS/MXene ratio. Moreover, the twin-coated hybrid aerogel exhibited outstanding compressive resilience, with a maximum compressive stress of 61.72 kPa under strain of 60% after 500 cycles. In addition, the relationship between the structure deformation and power coefficient of aerogels was constructed. Thus, this study provides a feasible route for fabricating aerogels with compressibility and efficient EMI shielding performance.

Graphical Abstract