Preparation of quasi-isotropic thermal conductive composites by interconnecting spherical alumina and 2D boron nitride flakes

Niu, Haoting; Zhang, Yi; Xiao, Guang; He, Xuhua; Yao, Yagang

doi:10.1007/s12598-022-02195-8

Cited by 21 publications

(9 citation statements)

References 64 publications

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“…Thermal management materials are widely applied in the fields of electronic devices, optoelectronic devices, and thermoelectric devices, where they control the dispersion, storage, and conversion of heat within a system, − for example, thermal switches, heat sinks, , and other devices. Exploring the thermal transport properties of thermal management materials is critical for both material application and device design. − In particular, the extremely low lattice thermal conductivity (κ l ) of materials has garnered significant attention in the research community. , After decades of efforts, the κ l of materials are controlled to 0.5–2 W/mK at room temperature, − such as bulk Au 2 S exhibits κ l of 1.99 W/mK, the κ l of penta-Sb 2 C is 0.88 W/mK, the κ l of two-dimensional tellurene is merely 0.61 W/mK .…”

Section: Introductionmentioning

confidence: 99%

First-Principles Study on the Thermal Transport Properties of Monolayer 1T-Ag₆X₂ (X = S, Se, Te)

He,

Wei,

Gan

et al. 2024

J. Phys. Chem. C

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Cluster substitution is a novel strategy for optimizing the physical and chemical properties of functional materials, but it is not fully understood in related fields, especially in the fields of thermoelectricity and engineering of thermal management. The monolayer 1T-Ag 6 X 2 (X = S, Se, Te) is obtained by substituting the transition metal atoms in traditional twodimensional transition metal sulfides (TMDs) with octahedral cluster Ag 6 . The phonon dispersion curves and ab initio molecular dynamics (AIMD) results show that monolayers 1T-Ag 6 S 2 and 1T-Ag 6 Se 2 have reliable stability. Therefore, the thermal transport performance of monolayers 1T-Ag 6 S 2 and 1T-Ag 6 Se 2 is studied systematically based on first principles. The results show that monolayers 1T-Ag 6 S 2 and 1T-Ag 6 Se 2 both have extremely low lattice thermal conductivity κ l , 0.27 and 0.30 W/mK at room temperature, respectively, which are much lower than those of twodimensional 1T-MX 2 and other two-dimensional materials. This is because, after the introduction of Ag 6 clusters, monolayers 1T-Ag 6 S 2 and 1T-Ag 6 Se 2 have more complex structures than traditional TMDs, with more tortuous phonon paths and greater phonon anharmonicity. It is also interesting to note that the contribution of optical and acoustic phonon modes to the total κ l of monolayers 1T-Ag 6 S 2 and 1T-Ag 6 Se 2 is similar (usually, the κ l of most two-dimensional materials is dominated by the acoustic component), which makes a reasonable explanation for the extremely low κ l of these two materials. In this study, we further understand the important role of cluster substitution in regulating the thermal transport properties of two-dimensional materials and provide research ideas for designing new two-dimensional materials with low κ l .

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Section: Introductionmentioning

confidence: 99%

First-Principles Study on the Thermal Transport Properties of Monolayer 1T-Ag₆X₂ (X = S, Se, Te)

He,

Wei,

Gan

et al. 2024

J. Phys. Chem. C

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“…Nowadays, with the rapid advancement of modern microelectronics technology, electronic products and devices are gradually moving towards miniaturization and high integration. [1][2][3] While this brings forth enhanced functionality, it also results in increasing power consumption and heat generation. [4][5][6] Due to the detrimental effects of high working temperatures on the stability and reliability of electronic devices, heat dissipation has become one of the signicant bottlenecks impeding the rapid progress of electronic technology.…”

Section: Introductionmentioning

confidence: 99%

Boosting the in-plane thermal conductivity of nanofibrillated cellulose films: alignment engineering of cross-linked AlN whiskers

Niu,

Zhao,

Wang

et al. 2023

J. Mater. Chem. A

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“…Unlike two-dimensional lamellar nanomaterials, spherical particles as isotropic fillers are characterized by low viscosity and good particle mobility. Considering the cost and feasibility, spherical alumina is employed as the second thermally conductive filler with BN to construct a multidimensional hybrid filler system with both high thermal conductivity and electrical insulation properties . Here, PDMS containing alumina is vacuum-impregnated into a 3D foam skeleton as a secondary thermal conductive network, thus making full use of the skeleton pores.…”

Section: Introductionmentioning

confidence: 99%

“…Considering the cost and feasibility, spherical alumina is employed as the second thermally conductive filler with BN to construct a multidimensional hybrid filler system with both high thermal conductivity and electrical insulation properties. 20 Here, PDMS containing alumina is vacuum-impregnated into a 3D foam skeleton as a secondary thermal conductive network, thus making full use of the skeleton pores. In this way, the hybrid filler synergistic effect is successfully achieved to build sufficient multilevel thermal conductive pathways.…”

Section: Introductionmentioning

confidence: 99%

Dual Network Structures of Polyurethane/Boron Nitride Nanosheets/Alumina for Improved Thermal Management of Polymers

Wu,

Che,

Sun

et al. 2023

ACS Appl. Nano Mater.

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The development of efficient thermally conductive polymer composites is crucial for the performance upgrade of modern electronics. However, the thermal conductivity of polymer composites is dramatically limited by inadequate thermal networks and mechanical properties degradation. Herein, we report the preparation of polydimethylsiloxane (PDMS) composites with dual thermal networks of functionalized boron nitride nanosheets (fBNs) and alumina (Al2O3) spheres impregnated in commercial polyurethane (PU) foams. The fBN layers are first assembled hydrothermally onto the surface of tannic acid (TA)-modified PU foam (PT) to form a 3D fBN network, followed by the vacuum infiltration of Al2O3/PDMS to obtain PT/fBN/Al2O3/PDMS composites. The thermal conductivity of the composite reaches 3.1 W/mK at 11.5 wt % fBN and 15 wt % Al2O3 loading, with a 2285% enhancement compared to that of pure PDMS. Moreover, the resulting composite shows excellent practical performance in the heat dissipation simulation of integrated chips, demonstrating the broad prospect for thermal management applications. Additionally, the mechanical properties of the composite are significantly improved. This work provides a promising strategy for the production of polymer-based high-performance thermal management materials.

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Preparation of quasi-isotropic thermal conductive composites by interconnecting spherical alumina and 2D boron nitride flakes

Cited by 21 publications

References 64 publications

First-Principles Study on the Thermal Transport Properties of Monolayer 1T-Ag₆X₂ (X = S, Se, Te)

First-Principles Study on the Thermal Transport Properties of Monolayer 1T-Ag₆X₂ (X = S, Se, Te)

Boosting the in-plane thermal conductivity of nanofibrillated cellulose films: alignment engineering of cross-linked AlN whiskers

Dual Network Structures of Polyurethane/Boron Nitride Nanosheets/Alumina for Improved Thermal Management of Polymers

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Preparation of quasi-isotropic thermal conductive composites by interconnecting spherical alumina and 2D boron nitride flakes

Cited by 21 publications

References 64 publications

First-Principles Study on the Thermal Transport Properties of Monolayer 1T-Ag6X2 (X = S, Se, Te)

First-Principles Study on the Thermal Transport Properties of Monolayer 1T-Ag6X2 (X = S, Se, Te)

Boosting the in-plane thermal conductivity of nanofibrillated cellulose films: alignment engineering of cross-linked AlN whiskers

Dual Network Structures of Polyurethane/Boron Nitride Nanosheets/Alumina for Improved Thermal Management of Polymers

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Product

Resources

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First-Principles Study on the Thermal Transport Properties of Monolayer 1T-Ag₆X₂ (X = S, Se, Te)

First-Principles Study on the Thermal Transport Properties of Monolayer 1T-Ag₆X₂ (X = S, Se, Te)