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<p>Although lyocell-based carbon cloth (LCC) used in this study exhibits favorable electrical conductivity, their electromagnetic interference (EMI) shielding effectiveness (SE) remains inadequate for high-performance applications. To improve EMI SE, a NiFeCu coating was deposited onto LCC via an electroless deposition process to increase the EMI SE of pristine LCC. The results confirmed the formation of a NiFeCu heterostructure exhibiting specific crystallinities without impurity peaks such as oxides and hydroxides which contributed to enhanced electrical and magnetic properties. Synergistic effects play a crucial role in achieving a superior EMI SE performance. NiFeCu@LCC demonstrated an exceptionally high EMI SE exceeding ~ 80&#xa0;dB, corresponding to a reduction of 99.999999% of the electromagnetic radiation. This performance is attributed to the high electrical conductivity of Cu, absorption losses induced by the magnetic properties of Fe and Ni, and the intrinsic dielectric loss of the carbon fibers. Therefore, NiFeCu@LCC represents a promising candidate for high-performance EMI shielding applications.</p>

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Characterization of Multi-Layered Metal-Plated Lyocell-Based Carbon Fabrics for Electromagnetic Interference Shielding Applications

  • 期刊论文

  • 发表日期：

    2026年5月5日

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  • Lee Ku Kwac,
  • Seong Min Yun,
  • Jae Jun Lee,
  • USang Lee,
  • Yongsin Jung,
  • Hae Jong Kim,
  • Hye Kyoung Shin

摘要

Although lyocell-based carbon cloth (LCC) used in this study exhibits favorable electrical conductivity, their electromagnetic interference (EMI) shielding effectiveness (SE) remains inadequate for high-performance applications. To improve EMI SE, a NiFeCu coating was deposited onto LCC via an electroless deposition process to increase the EMI SE of pristine LCC. The results confirmed the formation of a NiFeCu heterostructure exhibiting specific crystallinities without impurity peaks such as oxides and hydroxides which contributed to enhanced electrical and magnetic properties. Synergistic effects play a crucial role in achieving a superior EMI SE performance. NiFeCu@LCC demonstrated an exceptionally high EMI SE exceeding ~ 80 dB, corresponding to a reduction of 99.999999% of the electromagnetic radiation. This performance is attributed to the high electrical conductivity of Cu, absorption losses induced by the magnetic properties of Fe and Ni, and the intrinsic dielectric loss of the carbon fibers. Therefore, NiFeCu@LCC represents a promising candidate for high-performance EMI shielding applications.