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<p>Developing high-performance conductive polymer composites (CPCs) is urgently demanded to advance smart materials and electronic devices. In this work, compressed graphene foam (c-GF)/PDMS composites with excellent mechanical properties and good electrical conductivity were obtained by dropping and spin-coating PDMS on three-dimensional (3D) c-GF prepared by chemical vapor deposition (CVD). The c-GF/PDMS composites with different compressed graphene skeletons were investigated, and their excellent flexibility and durability, good electrical conductivity and hydrophobicity were confirmed. Moreover, the prepared c-GF/PDMS composites integrate excellent Joule heating and good electromagnetic interference (EMI) shielding functions. The c-GF/PDMS composites prepared with 90% compressed c-GF as the conductive filler exhibited an electrical conductivity of 872 S/m at a graphene loading of 22.1 wt%, a saturated heating temperature of 171 °C at an applied voltage of 3 V, and an EMI shielding effectiveness of 30.8 dB at a thickness of 0.5 mm in the X-band. The combination of high-performance and multifunctionality makes c-GF/PDMS composites very promising for applications in flexible electronics or wearable electronics, such as electromagnetic protection, thermal management, thermal therapy, anti-icing/deicing, etc.</p> Graphical Abstract <p></p>

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Flexible and high-performance compressed graphene foam/PDMS composite films for Joule heating and electromagnetic interference shielding

  • 期刊论文

  • 发表日期：

    2025年6月18日

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  • Luyang Niu,
  • Pei Ding,
  • Zhi Yuan,
  • Xuan Jia,
  • Zhihuan Wang,
  • Jiahao Xu,
  • Dongxia Chen,
  • Mingyu Li

摘要

Developing high-performance conductive polymer composites (CPCs) is urgently demanded to advance smart materials and electronic devices. In this work, compressed graphene foam (c-GF)/PDMS composites with excellent mechanical properties and good electrical conductivity were obtained by dropping and spin-coating PDMS on three-dimensional (3D) c-GF prepared by chemical vapor deposition (CVD). The c-GF/PDMS composites with different compressed graphene skeletons were investigated, and their excellent flexibility and durability, good electrical conductivity and hydrophobicity were confirmed. Moreover, the prepared c-GF/PDMS composites integrate excellent Joule heating and good electromagnetic interference (EMI) shielding functions. The c-GF/PDMS composites prepared with 90% compressed c-GF as the conductive filler exhibited an electrical conductivity of 872 S/m at a graphene loading of 22.1 wt%, a saturated heating temperature of 171 °C at an applied voltage of 3 V, and an EMI shielding effectiveness of 30.8 dB at a thickness of 0.5 mm in the X-band. The combination of high-performance and multifunctionality makes c-GF/PDMS composites very promising for applications in flexible electronics or wearable electronics, such as electromagnetic protection, thermal management, thermal therapy, anti-icing/deicing, etc.

Graphical Abstract