Scholarlink

<p>Microwave absorption materials can achieve superior performance through the implementation of effective strategies such as morphology and composition design. In this study, a straightforward hydrothermal approach was employed to synthesize FeCo/Co@C composites with a dandelion-like morphology. Subsequently, the investigation focused on systematically examining the influence of carbon content and pyrolysis temperature on the microstructure, phase composition, and microwave absorption performance. The findings indicate that at a glucose of 3&#xa0;mmol and pyrolysis temperature of 700&#xa0;℃, FCC2 exhibit a significant reflection loss (RL) of –51.13&#xa0;dB, accomplished through the utilization of an exceptionally slim matching thickness measuring only 1.4&#xa0;mm, additionally, optimal effectiveness across a bandwidth of 5.0&#xa0;GHz can be attained at 1.5&#xa0;mm. The remarkable ability of FCC2 samples to absorb microwaves can be credited to the distinctive structure resembling a dandelion and precise matching of magneto-dielectric elements. Consequently, these FeCo/Co@C composites show great potential as lightweight, high-performance microwave absorbers, offering a simple and efficient strategy for designing broadband absorption materials.</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

Construction of dandelion–like FeCo/Co@C composites with improved microwave absorption performance

  • 期刊论文

  • 发表日期：

    2025年10月28日

查看全文
  • Yuxiao Chen,
  • Yongle Jiang,
  • Fangyu Gan,
  • Yan Zhong,
  • Qingrong Yao,
  • Lichun Cheng,
  • Zhao Lu,
  • Haiqing Qin,
  • Jiang Wang,
  • Yuxuan Huang

摘要

Microwave absorption materials can achieve superior performance through the implementation of effective strategies such as morphology and composition design. In this study, a straightforward hydrothermal approach was employed to synthesize FeCo/Co@C composites with a dandelion-like morphology. Subsequently, the investigation focused on systematically examining the influence of carbon content and pyrolysis temperature on the microstructure, phase composition, and microwave absorption performance. The findings indicate that at a glucose of 3 mmol and pyrolysis temperature of 700 ℃, FCC2 exhibit a significant reflection loss (RL) of –51.13 dB, accomplished through the utilization of an exceptionally slim matching thickness measuring only 1.4 mm, additionally, optimal effectiveness across a bandwidth of 5.0 GHz can be attained at 1.5 mm. The remarkable ability of FCC2 samples to absorb microwaves can be credited to the distinctive structure resembling a dandelion and precise matching of magneto-dielectric elements. Consequently, these FeCo/Co@C composites show great potential as lightweight, high-performance microwave absorbers, offering a simple and efficient strategy for designing broadband absorption materials.