Controllable fabrication of CoNi bimetallic alloy for high-performance electromagnetic wave absorption

Xie, Hai; Li, Jinmei; Yang, Rui; Yang, Juan; Wang, Tingmei; Wang, Qihua

doi:10.1039/d3ra08896k

Cited by 5 publications

References 49 publications

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Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity in Polydimethylsiloxane Composites Endowed by Hydrangea‐Like CoNi@BN Heterostructure Fillers

He,

Zhong,

et al. 2024

Advanced Materials

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The advancement of thin, lightweight, and high‐power electronic devices has increasingly exacerbated issues related to electromagnetic interference and heat accumulation. To address these challenges, a spray‐drying‐sintering process is employed to assemble chain‐like CoNi and flake boron nitride (BN) into hydrangea‐like CoNi@BN heterostructure fillers. These fillers are then composited with polydimethylsiloxane (PDMS) to develop CoNi@BN/PDMS composites, which integrate low‐frequency microwave absorption and thermal conductivity. When the volume fraction of CoNi@BN is 44 vol% and the mass ratio of CoNi to BN is 3:1, the CoNi@BN/PDMS composites exhibit optimal performance in both low‐frequency microwave absorption and thermal conductivity. These composites achieve a minimum reflection loss of −49.9 dB and a low‐frequency effective absorption bandwidth of 2.40 GHz (3.92–6.32 GHz) at a thickness of 4.4 mm, fully covering the n79 band (4.4–5.0 GHz) for 5G communications. Meanwhile, the in‐plane thermal conductivity (λ∥) of the CoNi@BN/PDMS composites is 7.31 W m−1 K−1, which is ≈11.4 times of the λ∥ (0.64 W m−1 K−1) for pure PDMS, and 32% higher than that of the (CoNi/BN)/PDMS composites (5.52 W m−1 K−1) with the same volume fraction of CoNi and BN obtained through direct mixing.

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Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity in Polydimethylsiloxane Composites Endowed by Hydrangea‐Like CoNi@BN Heterostructure Fillers

He,

Zhong,

et al. 2024

Advanced Materials

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Preparation of N‐Doped Graphene‐Coated Co_xNi_y Alloy by Laser Induced Co_xNi_y‐MOFs for Detection of Gallic Acid

Wang,

Wu,

Lin

et al. 2024

Electroanalysis

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Thermal annealing needs protective gas environment, high pyrolysis temperature and long synthesis period. In this work, Co xNi y/PNG nanocomposites were prepared by laser induced Co xNi y‐MOFs at room temperature and in air environment for the first time. In contrast to Co/PNG and Ni/PNG, Co xNi y/PNG exhibits enhanced electrocatalytic activity for the oxidation of gallic acid. The optimal sensor presents a broad linear range of 0.7 ‐ 120 μM (R 2=0.993, with a sensitivity of 0.031 μA/μM) and a low detection limit of 0.13 μM. Meanwhile, the detection results of gallic acid in actual samples by this

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Construction of heterojunction MXene/RGO/CoFe-LDH for electromagnetic wave absorption

Ding,

Sun,

Wang

et al. 2025

Materials Research Bulletin

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Controllable fabrication of CoNi bimetallic alloy for high-performance electromagnetic wave absorption

Abstract: With the coming era of artificial intelligence (AI) dominated by high-tech electronics, developing high-performance microwave absorption materials (MAMs) is imperative to solve the problem of increasing electromagnetic inference and pollution.

Cited by 5 publications

References 49 publications

Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity in Polydimethylsiloxane Composites Endowed by Hydrangea‐Like CoNi@BN Heterostructure Fillers

Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity in Polydimethylsiloxane Composites Endowed by Hydrangea‐Like CoNi@BN Heterostructure Fillers

Preparation of N‐Doped Graphene‐Coated Co_xNi_y Alloy by Laser Induced Co_xNi_y‐MOFs for Detection of Gallic Acid

Construction of heterojunction MXene/RGO/CoFe-LDH for electromagnetic wave absorption

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Controllable fabrication of CoNi bimetallic alloy for high-performance electromagnetic wave absorption

Abstract: With the coming era of artificial intelligence (AI) dominated by high-tech electronics, developing high-performance microwave absorption materials (MAMs) is imperative to solve the problem of increasing electromagnetic inference and pollution.

Cited by 5 publications

References 49 publications

Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity in Polydimethylsiloxane Composites Endowed by Hydrangea‐Like CoNi@BN Heterostructure Fillers

Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity in Polydimethylsiloxane Composites Endowed by Hydrangea‐Like CoNi@BN Heterostructure Fillers

Preparation of N‐Doped Graphene‐Coated CoxNiy Alloy by Laser Induced CoxNiy‐MOFs for Detection of Gallic Acid

Construction of heterojunction MXene/RGO/CoFe-LDH for electromagnetic wave absorption

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Preparation of N‐Doped Graphene‐Coated Co_xNi_y Alloy by Laser Induced Co_xNi_y‐MOFs for Detection of Gallic Acid