Three-dimensional flower-like FeCoNi/reduced graphene oxide nanosheets with enhanced impedance matching for high-performance electromagnetic wave absorption

Ba1.8Sr0.2Co2Fe11.9Pr0.1O22/Ti3C2Tx‐MXene composites are synthesized with the unique combination of magnetic and conducting components that enhance electromagnetic wave absorption. Ba1.8Sr0.2Co2Fe11.9Pr0.1O22, Ti3C2Tx‐MXene and their composites in a weight ratio of 100:0 (YM1), 75:25 (YM2) and 50:50 (YM3) are synthesized by sol–gel autocombustion, etching process, and mechanical blending, respectively. From the morphology of the composites, Ba1.8Sr0.2Co2Fe11.9Pr0.1O22 particles are confirmed to be well‐integrated with the Ti3C2Tx‐MXene, indicating that the Ba1.8Sr0.2Co2Fe11.9Pr0.1O22 particles are evenly distributed in the Ti3C2Tx‐MXene, leading to homogeneous composites. M–H loop exhibits a saturation magnetization and coercivity of 23.01 emu g−1, 14.87 emu g−1, 12.45 emu g−1, and 87.44 Oe, 94.06 Oe, 102.97 Oe for YM1, YM2, and YM3, respectively. The reflection losses for YM1, YM2, and YM3 are −8.88, −11.64, and −21.39 dB, respectively. The double‐resonance peaks contribute to two magnetic loss peaks in YM3 within a broad frequency range. The higher attenuation constant is observed for YM3 corresponding to a stronger electromagnetic absorption. The improved electromagnetic properties of the composites can be attributed to the synergistic effect between the Ba1.8Sr0.2Co2Fe11.9Pr0.1O22 and Ti3C2Tx‐MXene, which enhances the impedance matching and increases the absorption of electromagnetic waves. These improved electromagnetic properties are important in applications such as electronic devices and communication systems.

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“…However, its electrical conductivity was limited by the oxygen‐containing groups on the rGO sheets 8 . For improving the electronical conductivity of rGO in EMI areas, rGO modified with metals, for instance, Ni, Ag, Au, Pt, and Pd have been broadcasted 9–12 . Among these metals, silver (Ag), owing highest electronic conductivity (6.2 × 10 7 S/m) was a promising candidate in EMI shielding areas 13 .…”

Section: Introductionmentioning

confidence: 99%

“…8 For improving the electronical conductivity of rGO in EMI areas, rGO modified with metals, for instance, Ni, Ag, Au, Pt, and Pd have been broadcasted. [9][10][11][12] Among these metals, silver (Ag), owing highest electronic conductivity (6.2 Â 10 7 S/m) was a promising candidate in EMI shielding areas. 13 For example, Tao Long et al one-pot synthesized rGO/Ag compounds through chemical reducing of sodium citrate aided via microwave.…”

Section: Introductionmentioning

confidence: 99%

Flexible composites by ionic liquid/silver/graphene in towel‐gourd sponge fibers: Synergistic effect and dual‐band electromagnetic interference shielding in X‐band and terahertz‐band

Xiang

Zhu

Qin

et al. 2022

J of Applied Polymer Sci

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Flexible polymer composites applied to such dual‐band electromagnetic interference (EMI) shielding were prepared by a facile approach. Firstly, heterogeneous conducting framework was fabricated by incorporating reduced graphene oxide (rGO), silver (Ag) followed with ionic liquids (IL) sequentially in the micro channels of towel‐gourd sponge (TS) fibers to increase the synergistic effect in conductivity. After that, the TS fibers modified by rGO, Ag, and IL (TS@IL‐Ag‐rGO) were blended with melting polyamide elastomer (PA) matrix in the internal mixer to obtain the PA/TS@IL‐Ag‐rGO composites. The composites exhibited high‐EMI shielding effectiveness of 32.3 dB in X‐band and 18.3 dB in THz‐band with 12 wt% fillers content due to the synergistic effect in the heterogeneous conducting framework, which opens an avenue for stretchable materials applied in shielding electromagnetic waves in X‐band and THz‐band at the same time.

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Three-dimensional flower-like FeCoNi/reduced graphene oxide nanosheets with enhanced impedance matching for high-performance electromagnetic wave absorption

Cited by 33 publications

References 54 publications

Magnetic enhanced high-efficiency electromagnetic wave absorbing MXene/Fe₃O₄ composite absorbers at 2–40 GHz

Magnetic enhanced high-efficiency electromagnetic wave absorbing MXene/Fe₃O₄ composite absorbers at 2–40 GHz

Synthesis, Characterization, and Electromagnetic Properties of Ba_1.8Sr_0.2Co₂Fe_11.9Pr_0.1O₂₂/Ti₃C₂T_x‐MXene Composites

Flexible composites by ionic liquid/silver/graphene in towel‐gourd sponge fibers: Synergistic effect and dual‐band electromagnetic interference shielding in X‐band and terahertz‐band

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Three-dimensional flower-like FeCoNi/reduced graphene oxide nanosheets with enhanced impedance matching for high-performance electromagnetic wave absorption

Cited by 33 publications

References 54 publications

Magnetic enhanced high-efficiency electromagnetic wave absorbing MXene/Fe3O4 composite absorbers at 2–40 GHz

Magnetic enhanced high-efficiency electromagnetic wave absorbing MXene/Fe3O4 composite absorbers at 2–40 GHz

Synthesis, Characterization, and Electromagnetic Properties of Ba1.8Sr0.2Co2Fe11.9Pr0.1O22/Ti3C2Tx‐MXene Composites

Flexible composites by ionic liquid/silver/graphene in towel‐gourd sponge fibers: Synergistic effect and dual‐band electromagnetic interference shielding in X‐band and terahertz‐band

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Product

Resources

About

Magnetic enhanced high-efficiency electromagnetic wave absorbing MXene/Fe₃O₄ composite absorbers at 2–40 GHz

Magnetic enhanced high-efficiency electromagnetic wave absorbing MXene/Fe₃O₄ composite absorbers at 2–40 GHz

Synthesis, Characterization, and Electromagnetic Properties of Ba_1.8Sr_0.2Co₂Fe_11.9Pr_0.1O₂₂/Ti₃C₂T_x‐MXene Composites