One-step in-situ green synthesis of cellulose nanocrystal aerogel based shape stable phase change material

Cheng, Miao; Hu, Jing; Xia, Jianqiang; Liu, Qianqian; Wei, Tao; Ling, Yun; Li, Wanfei; Liu, Bo

doi:10.1016/j.cej.2021.133935

Cited by 50 publications

(17 citation statements)

References 50 publications

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“…For TSO-2, the continuous black network skeleton structure showed a phase separation structure, indicating that n -octadecane was arrested by the network formation. In addition, the n -octadecane crystal in composites was subdivided and evenly dispersed, and the crystallization ability was much lower than that of pure n -octadecane, attributed to the free growth of n -octadecane crystal inhibited by the skeleton structure . The results above show that PTS can be used as a shape-setting material for paraffin PCMs.…”

Section: Resultsmentioning

confidence: 84%

Synthesis and Properties of Shape-Stabilized Phase Change Materials Based on Poly(triallyl isocyanurate-silicone)/n-Octadecane Composites

et al. 2022

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Triallyl isocyanurate (TAIC) was modified by hydrogen silicone oil (SO) via hydrosilylation reaction, generating the original TAIC-SO (TS) intermediate. After the cross-linking polymerization of TS (PTS), the shape-stabilized phase change materials (PCMs) consisting of n -octadecane and silicone-modified supporting matrix were first synthesized by an in situ reaction. Remarkably, the novel three-dimensional PTS network effectively prevents the leakage of n -octadecane during its phase transition, solving the prominent problem of solid–liquid PCMs in practical applications. Moreover, n -octadecane is uniformly dispersed in the continuous and high-strength cross-linked network, contributing to excellent thermal reliability and structural stability of PTS/ n -octadecane (TSO) composites. Differential scanning calorimetry analysis of the optimal TSO composite indicates that melting and freezing temperatures are 29.05 and 22.89 °C, and latent heats of melting and freezing are 130.35 and 129.81 J/g, respectively. After comprehensive characterizations, the shape-stabilized TSO composites turn out to be promising in thermal energy storage applications. Meanwhile, the strategy is practical and economical due to its advantages of easy operation, mild conditions, short reaction time, and low energy consumption.

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Section: Resultsmentioning

confidence: 84%

Synthesis and Properties of Shape-Stabilized Phase Change Materials Based on Poly(triallyl isocyanurate-silicone)/n-Octadecane Composites

et al. 2022

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“…The pure CNC film shows three characteristic peaks located around 2 θ = 14.6°, 16.9°, and 22.6°, corresponding to the (1

\overset{true¯}{1}

0), (110), and (200) crystallographic planes of the monoclinic cellulose I lattice, respectively. [ 52,53 ] A sharp peak at 2 θ = 26.8° is observed from CNC/20% BNNT nanocomposite film, corresponding to the (002) plane of h‐BN (JCPDS No. 73‐2095).…”

Section: Resultsmentioning

confidence: 99%

Growth of Boron Nitride Nanotube Over Al‐Based Active Catalyst and its Application in Thermal Management

Ding

et al. 2023

Small Structures

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The effective identification of the active catalytic phase is essential to elucidate the growth mechanism of boron nitride nanotubes (BNNTs) and realize their controllable and scalable synthesis. However, owing to the complexity of chemical reactions during BNNT growth via chemical vapor deposition (CVD) and the lack of techniques for in situ characterization at high temperatures (1100–1300 °C), identifying the true catalyst during BNNT growth is challenging. Herein, an aluminum (Al)‐based active catalyst for BNNT growth via CVD is investigated. The initial Al2O3 nanoparticle catalyst precursor is transformed into an Al‐B phase prior to BNNT growth. Based on our density functional theory‐based molecular dynamic simulations of BNNT nucleation, AlB x (x = 1.5 to 2) shows catalytic activity for the formation of BN chains and BN six‐membered rings. Confirmatory experiments demonstrate that AlB2 is the active Al‐based catalyst during BNNT growth. A nanocomposite is prepared from cellulose nanocrystal, and purified BNNTs exhibited a high in‐plane thermal conductivity of 13.33 W m−1 K−1 at 20 wt% BNNTs. A further application for light‐emitting diode chip cooling demonstrates excellent heat‐dissipation performance of the nanocomposite film. Thus, this study can guide the controllable synthesis of high‐quality BNNTs and facilitate their use in thermal interface materials.

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“…Nevertheless, current PCM-based solar-thermal-electric conversion technologies still suffer from low power density output, which is impeded by poor sunlight absorption capacity and the intrinsic low thermal conductivity of pristine PCMs. 28,29 Therefore, it is of great importance to develop a green, robust and versatile platform to shape solid-liquid PCMs and endow them with efficient thermal energy storage, temperature regulation of electronic devices, and solar-thermoelectric conversion.…”

Section: Introductionmentioning

confidence: 99%

A green, robust, and versatile BN nanosheet unidirectional aerogel encapsulated phase change material for effective thermal management of electronics and solar-thermoelectric conversion

Chen

et al. 2023

J. Mater. Chem. A

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One-step in-situ green synthesis of cellulose nanocrystal aerogel based shape stable phase change material

Cited by 50 publications

References 50 publications

Synthesis and Properties of Shape-Stabilized Phase Change Materials Based on Poly(triallyl isocyanurate-silicone)/n-Octadecane Composites

Synthesis and Properties of Shape-Stabilized Phase Change Materials Based on Poly(triallyl isocyanurate-silicone)/n-Octadecane Composites

Growth of Boron Nitride Nanotube Over Al‐Based Active Catalyst and its Application in Thermal Management

A green, robust, and versatile BN nanosheet unidirectional aerogel encapsulated phase change material for effective thermal management of electronics and solar-thermoelectric conversion

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