Carbon nanotube bundles assembled flexible hierarchical framework based phase change material composites for thermal energy harvesting and thermotherapy

Chen, Xiao; Gao, Hongyi; Hai, Guangtong; Jia, Dandan; Xing, Liwen; Chen, Siyuan; Piao, Changhao; Han, Mengyi; Dong, Wenjun; Wei, Guojian

doi:10.1016/j.ensm.2019.12.029

Cited by 149 publications

(65 citation statements)

References 59 publications

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“…This suggests that the σ solid / σ liquid of the functional composites is greater than 1. The resistivity of paraffin wax/foam graphite form‐stable composite PCMs (FSPCMs) also showed a significant difference before and after melting 9 …”

Section: Resultsmentioning

confidence: 99%

“…The resistivity of paraffin wax/foam graphite form-stable composite PCMs (FSPCMs) also showed a significant difference before and after melting. 9 A large number of repeated experimental results show that the PEG-CaCl 2 /EG functional composite PCMs have excellent repeatability, which is mainly due to the uniform dispersion of EG in PEG-CaCl 2 -ethanol solution. Firstly, ethanol can reduce the specific surface energy of EG, so that EG can be better dispersed in the solution.…”

Section: Research On the Electrical Conductivity Of Functional Pcmsmentioning

confidence: 99%

“…Highly efficient thermal energy storage technology has attracted wide attention. 8,9 Phase change materials (PCMs) can store and release latent heat through phase changes and small temperature changes. Therefore, scholars around the world are committed to introducing other energy conversion media into PCMs to obtain the functional composite PCMs with energy conversion and energy storage functions.…”

Section: Introductionmentioning

confidence: 99%

“…Phase change energy storage technology can solve the problem of energy mismatch in space‐time, thus meeting the technical and economic requirements of engineering and products and improving the utilization rate of energy. Highly efficient thermal energy storage technology has attracted wide attention 8,9 …”

Section: Introductionmentioning

confidence: 99%

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Polyethylene glycol—based functional composite phase change materials with excellent electrical and thermal conductivities

Sun

Zhang

et al. 2020

Int J Energy Res

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Phase change materials (PCMs) have limited use in thermal storage because of their poor conductivity and lack of multi driving energy. Therefore, to overcome these problems, polyethylene glycol-calcium chloride/expanded graphite (PEG-CaCl 2 /EG) functional composite PCMs with high electrical and thermal conductivities were synthesized by ligand substitution using PEG-CaCl 2 as the PCM and EG as the highly electrically and thermally conductive framework material. The PEG-CaCl 2 /EG PCMs were thoroughly investigated, and the experimental results revealed the significance of EG in the composite structure, which leads to high electrical conductivity and high thermal conductivity. The resistivity of the functional PCM decreased to 1.67 Ω m, and the thermal conductivity (k) increased to 8.4 W/(m K) when the EG content was 10 wt%. In addition, the electro-thermal conversion efficiency of the functional PCM reached 86.9%, and its energy storage could be inspired at low voltages (2.0-5.0 V). The heating and energy storage rates increased with the working voltage and EG content, respectively. Melting-crystallization experiments and electro-thermal cycle tests showed that the functional PCMs had good thermal stability. Therefore, this study provides a new perspective for various fields of energy conversion and storage. K E Y W O R D S electro-thermal conversion and storage, electronic and thermal conductivity, expanded graphite (EG), polyethylene glycol (PEG)

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Section: Resultsmentioning

confidence: 99%

Section: Research On the Electrical Conductivity Of Functional Pcmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polyethylene glycol—based functional composite phase change materials with excellent electrical and thermal conductivities

Sun

Zhang

et al. 2020

Int J Energy Res

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“…However, pristine PCMs have leakage issue during the solid-liquid phase change process, which seriously hinders their widespread utilization. The best solution is to prepare composite PCMs by packaging PCMs into supporting materials ( Chen et al., 2020a ; Lin et al., 2018b ; Qureshi et al., 2018 ). To date, the most popular is carbon supporting materials, especially graphene and carbon nanotubes (CNTs) materials ( Aftab et al., 2019 ; Cao et al., 2019 ; Hu et al., 2020 ; Qian et al., 2018 ; Shin et al., 2016 ; Song et al, 2019 ; Tang et al, 2019 ; Wang et al., 2019b ; Wu et al, 2019 ; Xue et al., 2019 ; Zhang et al., 2019a , 2019b , 2019d ; Zhang and Liu, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Toward Tailoring Chemistry of Silica-Based Phase Change Materials for Thermal Energy Storage

et al. 2020

Self Cite

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Summary Efficient thermal energy harvesting using phase change materials (PCMs) has great potential for thermal energy storage and thermal management applications. Benefiting from these merits of pore structure diversity, convenient controllability, and excellent thermophysical stability, SiO 2 -based composite PCMs have comparatively shown more promising prospect. In this regard, the microstructure-thermal property correlation of SiO 2 -based composite PCMs is still unclear despite the significant achievements in structural design. To enrich the fundamental understanding on the correlations between the microstructure and the thermal properties, we systematically summarize the state-of-the-art advances in SiO 2 -based composite PCMs for tuning thermal energy storage from the perspective of tailoring chemistry strategies. In this review, the tailoring chemistry influences of surface functional groups, pore sizes, dopants, single shell, and hybrid shells on the thermal properties of SiO 2 -based composite PCMs are systematically summarized and discussed. This review aims to provide in-depth insights into the correlation between structural designs and thermal properties, thus showing better guides on the tailor-made construction of high-performance SiO 2 -based composite PCMs. Finally, the current challenges and future recommendations for the tailoring chemistry are also highlighted.

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Exploring Next‐Generation Functional Organic Phase Change Composites

Zhou

Yang

Feng

et al. 2022

Adv Funct Materials

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As one of the main forms and intermediate carriers of energy, it is impressive to expand the application scope of heat energy, thereby boosting innovations in heat harvesting, conversion, storage, regulation, and utilization associated with the relevant techniques. Phase change materials (PCMs), as a state-of-the-art latent heat storage technique, have garnered increasing interest in heat-related applications over the past decades, and abundant high-performance PCMs with excellent shape stability and salient thermal conductivity have been developed. This review focuses on the issues concerning organic PCMs from the perspectives of flexible, multifunctional, and smart phase change composites, along with emerging applications and processing technologies, which are expected to offer possible guidance for the exploration of next-generation advanced functional phase change composites.

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Carbon nanotube bundles assembled flexible hierarchical framework based phase change material composites for thermal energy harvesting and thermotherapy

Cited by 149 publications

References 59 publications

Polyethylene glycol—based functional composite phase change materials with excellent electrical and thermal conductivities

Polyethylene glycol—based functional composite phase change materials with excellent electrical and thermal conductivities

Toward Tailoring Chemistry of Silica-Based Phase Change Materials for Thermal Energy Storage

Exploring Next‐Generation Functional Organic Phase Change Composites

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