Form-stable phase change composites based on nanofibrillated cellulose/polydopamine hybrid aerogels with extremely high energy storage density and improved photothermal conversion efficiency

Tan, Yunlong; Du, Xiaosheng; Du, Zongliang; Wang, Haibo; Cheng, Xu

doi:10.1039/d0ra10485j

Cited by 24 publications

(8 citation statements)

References 44 publications

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“…53 °C). 65 In the SAXS region (2θ < 5°), it is possible to detect the larger-scale crystal planes formed upon paraffin crystallization; 66 − 68 also, it showed the planes located at 2θ = 2.4, 4.9, and 7.4° attributed to orthorhombic paraffin structures ( n-pentacosane , m.p = 52–54 °C 66 , 67 or n-octacosane , m.p = 57–62 °C 68 ). It should be noted that paraffins are long-chain saturated alkane mixtures with the general formula C n H 2 n +2 .…”

Section: Resultsmentioning

confidence: 99%

“…In contrast, the paraffin-filled filaments (HF-PA) presented a typical SAXS/WAXS crystal structure of paraffin with melting points around 52–62 °C (Figure S4c). − The first two prominent WAXS peaks (2θ >5° region) correlate with the principal planes (110) and (200) appearing around 2θ = 21°, and 2θ = 23° for crystalline microparaffin (melting point of ca. 53 °C) .…”

Section: Resultsmentioning

confidence: 99%

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Hollow Filaments Synthesized by Dry-Jet Wet Spinning of Cellulose Nanofibrils: Structural Properties and Thermoregulation with Phase-Change Infills

Reyes

Ajdary

Yazdani

et al. 2022

ACS Appl. Polym. Mater.

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We use dry-jet wet spinning in a coaxial configuration by extruding an aqueous colloidal suspension of oxidized nanocellulose (hydrogel shell) combined with airflow in the core. The coagulation of the hydrogel in a water bath results in hollow filaments (HF) that are drawn continuously at relatively high rates. Small-angle and wide-angle X-ray scattering (SAXS/WAXS) reveals the orientation and order of the cellulose sheath, depending on the applied shear flow and drying method (free-drying and drying under tension). The obtained dry HF show Young’s modulus and tensile strength of up to 9 GPa and 66 MPa, respectively. Two types of phase-change materials (PCM), polyethylene glycol (PEG) and paraffin (PA), are used as infills to enable filaments for energy regulation. An increased strain (9%) is observed in the PCM-filled filaments (HF-PEG and HF-PA). The filaments display similar thermal behavior (dynamic scanning calorimetry) compared to the neat infill, PEG, or paraffin, reaching a maximum latent heat capacity of 170 J·g –1 (48–55 °C) and 169 J·g –1 (52–54 °C), respectively. Overall, this study demonstrates the facile and scalable production of two-component core-shell filaments that combine structural integrity, heat storage, and thermoregulation properties.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Hollow Filaments Synthesized by Dry-Jet Wet Spinning of Cellulose Nanofibrils: Structural Properties and Thermoregulation with Phase-Change Infills

Reyes

Ajdary

Yazdani

et al. 2022

ACS Appl. Polym. Mater.

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“…Since a short irradiation time is sufficient for the movement of low-content PGO-CTAB molecules in the lattice, the melting time of PGO-CTAB/CS6(5) was just 100.3 s. In the cooling stage, the lengths of crystallization plateaus of samples show a difference. The delayed response of melted PEG in the cooling process caused the temperature increase of these crystallization plateaus [ 42 ]. The solidification time of PCMs was consistent with their melting time, which means PCM with a long melting time also needs a long solidification time.…”

Section: Resultsmentioning

confidence: 99%

Effect of GO on the Structure and Properties of PEG/Biochar Phase Change Composites

et al. 2023

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In recent years, phase change materials (PCMs) have been widely used in waste heat utilization, buildings, and solar and wind energy, but with a huge limitation from the low thermal conductivity, photothermal conversion efficiency, and low latent heat. Organic PCMs are eyecatching because of its high latent heat storage capability and reliability, but they still suffer from a lack of photothermal conversion and sharp stability. Here, we prepared sharp-stable PCMs by establishing a carbon material frame system consisting of graphene oxide (GO) and biochar. In particular, surfactants (CTAB, KH-560 and KH-570) were employed to improve the dispersity of GO in PEG. The differential scanning calorimetry results shows that the latent heat of PEG modified by CTAB grafted GO (PGO-CTAB) was the highest (191.36 J/g) and increased by 18.31% compared to that of pure PEG (161.74 J/g). After encapsulation of PGO-CTAB in biochar, the obtained composite PCM with the amount of biochar and PGO-CTAB in weight ratio 4:6 (PGO-CTAB/CS6(6)) possesses relatively high latent heat 106.51 J/g with good leak resistance and thermal stability, and with obviously enhanced thermal conductivity (0.337 W/(m·K)) and photothermal conversion efficiency (77.43%), which were higher than that of PEG6000 (0.325 W/(m·K), 44.63%). The enhancement mechanism of heat transfer and photothermal conversion on the composite PCM is discussed.

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“…Polydopamine (PDA) has high photothermal effects in broad sunlight spectrum and can be used for near-infrared photothermal therapy of cancer. 210 Tan et al 211 prepared NFC/PDA hybrid aerogels (NPAs) by cation-induced gelation of NFC/PDA suspension. Then NPA-based composite PCMs were synthesized by impregnating n-octadecane into NPAs.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Aerogels Meet Phase Change Materials: Fundamentals, Advances, and Beyond

et al. 2022

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Benefiting from the inherent properties of ultralight weight, ultrahigh porosity, ultrahigh specific surface area, adjustable thermal/electrical conductivities, and mechanical flexibility, aerogels are considered ideal supporting alternatives to efficiently encapsulate phase change materials (PCMs) and rationalize phase transformation behaviors. The marriage of versatile aerogels and PCMs is a milestone in pioneering advanced multifunctional composite PCMs. Emerging aerogel-based composite PCMs with high energy storage density are accepted as a cutting-edge thermal energy storage (TES) concept, enabling advanced functionality of PCMs. Considering the lack of a timely and comprehensive review on aerogel-based composite PCMs, herein, we systematically retrospect the state-of-the-art advances of versatile aerogels for high-performance and multifunctional composite PCMs, with particular emphasis on advanced multiple functions, such as acoustic−thermal and solar−thermal−electricity energy conversion strategies, mechanical flexibility, flame retardancy, shape memory, intelligent grippers, and thermal infrared stealth. Emphasis is also given to the versatile roles of different aerogels in composite PCMs and the relationships between their architectures and thermophysical properties. This review also showcases the discovery of an interdisciplinary research field combining aerogels and 3D printing technology, which will contribute to pioneering cutting-edge PCMs. This review aims to arouse wider research interests among interdisciplinary fields and provide insightful guidance for the rational design of advanced multifunctional aerogel-based composite PCMs, thus facilitating the significant breakthroughs in both fundamental research and commercial applications.

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Form-stable phase change composites based on nanofibrillated cellulose/polydopamine hybrid aerogels with extremely high energy storage density and improved photothermal conversion efficiency

Abstract: Novel form-stable composite phase change materials were fabricated by impregnating n-octacosane into nanofibrillated cellulose/polydopamine hybrid aerogels.

Cited by 24 publications

References 44 publications

Hollow Filaments Synthesized by Dry-Jet Wet Spinning of Cellulose Nanofibrils: Structural Properties and Thermoregulation with Phase-Change Infills

Hollow Filaments Synthesized by Dry-Jet Wet Spinning of Cellulose Nanofibrils: Structural Properties and Thermoregulation with Phase-Change Infills

Effect of GO on the Structure and Properties of PEG/Biochar Phase Change Composites

Aerogels Meet Phase Change Materials: Fundamentals, Advances, and Beyond

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