首页|Heterostructure design of hydrangea-like Co2P/Ni2P@C multilayered hollow microspheres for high-efficiency microwave absorption

Heterostructure design of hydrangea-like Co2P/Ni2P@C multilayered hollow microspheres for high-efficiency microwave absorption

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Structural design and elemental doping are research hotspots for the preparation of lightweight absorbers with high absorption performance and low filling ratio.Herein,a P-doped hydrangea-like layered compos-ite(Co2P/Ni2P@C)encapsulated with Ni-LDH was successfully synthesized by solvothermal method fol-lowed by phosphorization.The defects generated by P doping and the generation of multilayered nonuni-form interfaces enhance the dielectric loss induced by polarization.Simultaneously,the magnetic phos-phides induce magnetic loss and modulate the dielectric properties of the carbon matrix to enhance the conductive loss.The multilayered hollow structure of this composite promotes the scattering and reflec-tion of electromagnetic waves and optimizes the impedance characteristics.As a result,the multilayered hollow Co2P/Ni2P@C composite exhibits an optimum reflection loss value(RL)of-64.6 dB at 15.1 GHz with a thickness of 2 mm and a filler ratio of only 10 wt％.The radar cross-section(RCS)attenuation further demonstrates that the material can dissipate microwave energy in practical applications.Overall,this work provides an effective development strategy for the design of multilayered high-performance electromagnetic wave(EMW)absorbers doped with strongly polarized elements.

Microwave absorptionP-dopingRadar cross sectionMultilayered hollow architectureHydrangea-like

Wei Wang、Kai Nan、Hao Zheng、Qingwei Li、Yan Wang

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School of Materials and Chemical Engineering,Xi'an Technological University,Xi'an 710021,China

Department of Joint Surgery,Honghui Hospital,Xi'an Jiaotong University,Xi'an 710054,China

国家自然科学基金国家自然科学基金国家自然科学基金Young Star Project of Science and Technology of Shaanxi ProvinceNatural Science Basic Research Program of Shaanxi Province

6170138621975196517711402019KJXX-0332022JM-358

2024

10.1016/j.jmst.2023.09.023

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.181(14)
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