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<p>In this study, C- and O-doped modified BCNO materials were synthesized using biomass carbon as a template. After modification, the BCNO materials demonstrated promising dual functionality, exhibiting good microwave absorption performance alongside effective thermal conductivity, addressing both electromagnetic pollution and thermal overload issues in devices. Among the samples, BCNO-3 exhibited the best overall electromagnetic wave absorption performance, achieving a minimum reflection loss (RLmin) of −&#xa0;46.14&#xa0;dB at 8&#xa0;GHz, with an effective absorption bandwidth (EAB) of 2.27&#xa0;GHz and a matching thickness of 4.72&#xa0;mm. Additionally, BCNO-3 showed excellent thermal conductivity of 2.18 W/(m·K). This research highlights the potential of BCNO materials as dual-functional components for both thermal management and microwave absorption, contributing to the development of advanced materials for modern electronics.</p>

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Enhanced microwave absorption and thermal conductivity of biomass-derived BCNO materials

  • 期刊论文

  • 发表日期：

    2025年3月5日

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  • Jianchao Xu,
  • Ting Gao,
  • Shujia Liu,
  • Yufeng Jiao

摘要

In this study, C- and O-doped modified BCNO materials were synthesized using biomass carbon as a template. After modification, the BCNO materials demonstrated promising dual functionality, exhibiting good microwave absorption performance alongside effective thermal conductivity, addressing both electromagnetic pollution and thermal overload issues in devices. Among the samples, BCNO-3 exhibited the best overall electromagnetic wave absorption performance, achieving a minimum reflection loss (RLmin) of − 46.14 dB at 8 GHz, with an effective absorption bandwidth (EAB) of 2.27 GHz and a matching thickness of 4.72 mm. Additionally, BCNO-3 showed excellent thermal conductivity of 2.18 W/(m·K). This research highlights the potential of BCNO materials as dual-functional components for both thermal management and microwave absorption, contributing to the development of advanced materials for modern electronics.