Fire-resistant plant fiber sponge enabled by highly thermo-conductive hexagonal boron nitride ink

Chen, Tingjie; Li, Yong; Hu, Xiaokang; Zhao, Gang; Qin, Zipeng; Aladejana, John Tosin; Peng, Xiangfang; Wu, Binghui

doi:10.1016/j.cej.2021.132135

Cited by 3 publications

(2 citation statements)

References 53 publications

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“…The well-exfoliated nanosheet dispersion combined with suitable solvents and stabilizing polymers is ideal for a wide range of printing applications. 20 In printed films, the deposited BNNSs form a porous structure, compromising their mechanical integrity, susceptibility to moisture, and also substrate adhesion. A solution-processable h-BN ink specially formulated for screen printing can yield thermally and chemically stable printed components for device applications.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Exfoliated 2D materials are attractive for future energy-harvesting technology as potential active materials. , Traditionally, liquid-phase exfoliation is a scalable method for the production of layered 2D nanostructures. The well-exfoliated nanosheet dispersion combined with suitable solvents and stabilizing polymers is ideal for a wide range of printing applications . In printed films, the deposited BNNSs form a porous structure, compromising their mechanical integrity, susceptibility to moisture, and also substrate adhesion.…”

Section: Introductionmentioning

confidence: 99%

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Two-dimensional Hexagonal Boron Nitride Nanosheet–Polycarbonate Composite Ink-Based Printed Flexible Triboelectric Nanogenerator for Scavenging Mechanical Energy

Bhavya,

Varghese,

Chandran

et al. 2023

ACS Appl. Electron. Mater.

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In the modern world, the rapid depletion of conventional energy sources demands urgent exploration of materials and methods for clean, efficient, and sustainable energy production. As a mechanical energy harvester, triboelectric nanogenerators (TENGs) have been investigated extensively in recent years due to their high power output, superior energy conversion efficiency, low cost, and ease of manufacturing. Herein, a high-performance flexible TENG is developed based on 2D-hexagonal boron nitride nanosheet (BNNS) ink printed on Mylar substrates as a triboelectric contact layer. The thixotropy of the BNNS dispersion was controlled by polycarbonate (PC) and other suitable organic additives. Further, the formulation was modified into a versatile ink (BN-PC ink) suited for screen printing. Remarkably, the flexible screen-printed TENG (FS-TENG) fabricated using BN-PC ink as a tribonegative material, paired with the printed polyvinylpyrrolidone (PVP) on Mylar as a tribopositive material, demonstrated a very high voltage of ∼800 V and a short-circuit current density of ∼0.78 mA/m2, respectively, under an actuating force of ∼10 N with 5 Hz frequency. The FS-TENG has shown an impressive power density of ∼1.36 W m– 2 at 200 MΩ resistive load, which is ∼7 times higher than that of the TENG without BNNSs. Further, the fabricated FS-TENG device is demonstrated for powering electronic gadgets such as digital thermometers, calculators, and light-emitting diodes (LEDs) with a mere finger-tapping force of ∼5 N.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two-dimensional Hexagonal Boron Nitride Nanosheet–Polycarbonate Composite Ink-Based Printed Flexible Triboelectric Nanogenerator for Scavenging Mechanical Energy

Bhavya,

Varghese,

Chandran

et al. 2023

ACS Appl. Electron. Mater.

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Strategies for optimizing interfacial thermal resistance of thermally conductive hexagonal boron nitride/polymer composites: A review

Jia,

An,

et al. 2024

Polymer Composites

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With the continuous development of high‐end electronic information technologies such as 5G communications, thermal management is an urgent issue in the electronic and circuit industries due to the miniaturization, functionalization and integration. Recently, polymer‐based composites with the fillers of hexagonal boron nitride (h‐BN) have been regarded as promising candidates resulting from their excellent thermal conductivity (TC), good insulation and remarkable comprehensive properties. However, the high surface inertness of h‐BN itself, incompatibility with matrix and other fillers and mismatch of phonon‐spectrum will bring about the matrix/filler and filler/filler interfacial thermal resistance (ITR), which will greatly decline the TC of the composites, and limit their thermal management ability. Therefore, how to design, regulate and improve the interfacial states in composites and eventually enhance the TC is a current challenge. Researchers have made great effort to reduce the ITR of the composites to improve their TC. However, a comprehensive summary and analysis of researches on the improvement methods of the interface states in composites in the past 3 years is still lacking. In this work, the commonly used mechanism models, and simulation methods for calculating and predicting TC was summarized. From perspectives of Synthesis of h‐BNNs, modification, orientation, bridging and three‐dimensional structures construction, we reviewed strategies for improving the interface states in composites, and focused on the ITR regulation and TC improvement. The improvement effects of various methods on TC were compared. The development trend of high TC composite materials was prospected.Highlights Crystallinity, defect, size, flatness, thickness of hexagonal boron nitride nanosheets (BNNSs) affect interfacial thermal resistance (ITR). Nature of interaction between adjacent layers of BNNS need exploited. Interface and defect are root cause of extra phonon scattering. Shape, density, surface area, distribution and compatibility reduce ITR. Theory, model, simulation methods need developed on different levels.

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Self-extinguishing properties and fire-retardant applications of hexagonal boron nitride

Maiya,

Chandra,

Ameta

et al. 2024

Hexagonal Boron Nitride

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Fire-resistant plant fiber sponge enabled by highly thermo-conductive hexagonal boron nitride ink

Cited by 3 publications

References 53 publications

Two-dimensional Hexagonal Boron Nitride Nanosheet–Polycarbonate Composite Ink-Based Printed Flexible Triboelectric Nanogenerator for Scavenging Mechanical Energy

Two-dimensional Hexagonal Boron Nitride Nanosheet–Polycarbonate Composite Ink-Based Printed Flexible Triboelectric Nanogenerator for Scavenging Mechanical Energy

Strategies for optimizing interfacial thermal resistance of thermally conductive hexagonal boron nitride/polymer composites: A review

Self-extinguishing properties and fire-retardant applications of hexagonal boron nitride

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