Enhanced light-to-thermal conversion performance of all-carbon aerogels based form-stable phase change material composites

Wang, Chengjun; Wang, Linqiang; Liang, Weidong; Liu, Fang; Wang, Shuo; Sun, Hanxue; Zhu, Zhaoqi

doi:10.1016/j.jcis.2021.07.066

Cited by 57 publications

(17 citation statements)

References 45 publications

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“…However, the XRD peak of the aluminum was not detected due to the small quantity of aluminum. In addition, the Raman spectra of CA–600 and AlCA–600 in Figure 2 b demonstrated that there were two characteristic peaks at wavelength 1347 cm −1 and 1585 cm −1 , which could be assigned to graphite D peak and G peak, respectively [ 34 ]. The peaks of CA–600 did not demonstrate a detectable difference from those of AlCA–600 due to the weak interaction between the lower temperature of Al and C, corresponding to the result of the XRD patterns ( Figure 2 a).…”

Section: Resultsmentioning

confidence: 99%

“…The peaks of CA–600 did not demonstrate a detectable difference from those of AlCA–600 due to the weak interaction between the lower temperature of Al and C, corresponding to the result of the XRD patterns ( Figure 2 a). In addition, Figure 2 c revealed the discrepancy of the D peak in CA–800 and AlCA–800, which could be ascribed to the interaction of the Al and C and the decrease in the graphitization degree in AlCA–800 [ 34 , 35 ]. Moreover, as discovered in Figure 2 d, the difference appeared in the CA–1000 and AlCA–1000 due to the same reason.…”

Section: Resultsmentioning

confidence: 99%

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Design of Economical and Achievable Aluminum Carbon Composite Aerogel for Efficient Thermal Protection of Aerospace

Dai³

et al. 2022

Gels

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Insulation materials play an extremely important role in the thermal protection of aerospace vehicles. Here, aluminum carbon aerogels (AlCAs) are designed for the thermal protection of aerospace. Taking AlCA with a carbonization temperature of 800 °C (AlCA–800) as an example, scanning electron microscopy (SEM) images show an integrated three-dimensional porous frame structure in AlCA–800. In addition, the thermogravimetric test (TGA) reveals that the weight loss of AlCA–800 is only ca. 10%, confirming its desirable thermal stability. Moreover, the thermal conductivity of AlCA–800 ranges from 0.018 W m−1 K−1 to 0.041 W m−1 K−1, revealing an enormous potential for heat insulation applications. In addition, ANSYS numerical simulations are carried out on a composite structure to forecast the thermal protection ability of AlCA–800 acting as a thermal protection layer. The results uncover that the thermal protective performance of the AlCA–800 layer is outstanding, causing a 1185 K temperature drop of the structure surface that is exposed to a heat environment for ten minutes. Briefly, this work unveils a rational fabrication of the aluminum carbon composite aerogel and paves a new way for the efficient thermal protection materials of aerospace via the simple and economical design of the aluminum carbon aerogels under the guidance of ANSYS numerical simulation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Design of Economical and Achievable Aluminum Carbon Composite Aerogel for Efficient Thermal Protection of Aerospace

Dai³

et al. 2022

Gels

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“…9,10 Therefore, shape-stabilized PCMs consisting of PCMs with a supporting matrix have been fabricated and are considered the most promising systems for solving the leakage and thermal conductivity issues of PCMs. [11][12][13][14] Carbon aerogels are attractive as supporting matrix materials in shape-stabilized PCMs due to their properties such as ultralight weight, adjustable shape and density, high specic surface area, and strong adsorption. [15][16][17] At present, most carbon aerogels are derived from the pyrolysis of polymer aerogels.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Shape-stabilized phase change composites enabled by lightweight and bio-inspired interconnecting carbon aerogels for efficient energy storage and photo-thermal conversion

et al. 2022

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“…This has become one of the most effective ways to improve thermal performance. In past decades, porous materials such as expanded graphite and expanded perlite have been used to prepare shape-stable PCMs [ 9 , 10 , 11 , 12 , 13 ]. The porous structure is conducive to improving the thermal conductivity of PCMs.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Thermal Performance of Composite Phase Change Materials Based on Hybrid Graphene Aerogels for Thermal Energy Storage

Shang

Zhang

et al. 2022

Materials

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Thermal conductivity and latent heat are crucial performance parameters for phase change materials (PCMs) in thermal energy storage. To enhance the thermal performance of PCMs, with the help of graphene oxide (GO) acting as a dispersing agent, well-defined hybrid graphene aerogels (HGAs) with a three-dimensional (3D) porous structure were successfully synthesized by hydrothermal reaction of GO and graphene nanoplatelets (GNPs). GNPs, dispersing uniformly along the interconnecting graphene network, acted as thermal conductive fillers and supporting materials. Palmitic acid (PA) was impregnated into the HGA by vacuum forces. It was found that the thermal conductivity of the PA/HGA was enhanced without compromising heat storage capacity. Compared with PA, the PA/HGA with 4.2 wt% GNPs exhibited enhanced thermal conductivity of 2.1 W/mK and high latent heat of 206.2 J/g simultaneously. The PA/HGA with good thermal performance has potential applications in thermal energy storage.

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Enhanced light-to-thermal conversion performance of all-carbon aerogels based form-stable phase change material composites

Cited by 57 publications

References 45 publications

Design of Economical and Achievable Aluminum Carbon Composite Aerogel for Efficient Thermal Protection of Aerospace

Design of Economical and Achievable Aluminum Carbon Composite Aerogel for Efficient Thermal Protection of Aerospace

Shape-stabilized phase change composites enabled by lightweight and bio-inspired interconnecting carbon aerogels for efficient energy storage and photo-thermal conversion

Enhanced Thermal Performance of Composite Phase Change Materials Based on Hybrid Graphene Aerogels for Thermal Energy Storage

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