Flexible copper foam-based phase change materials with good stiffness-toughness balance, electro-to-thermal conversion ability and shape memory function for intelligent thermal management

Xiao, Yuan-yuan; Dan, Bai; Xie, Z.L.; Yang, Zhenyu; Yang, Jing‐hui; Qi, Xiao-dong; Wang, Yong

doi:10.1016/j.compositesa.2021.106420

Cited by 76 publications

(30 citation statements)

References 50 publications

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“…Xiao et al prepared flexible PCMs based on copper-coated melamine foam and PEG; the continuous copper network provides the encapsulation capacities of PEG, imparting the PCMs excellent shape stability during the phase change process. 29 Wu et al proposed a strategy for synthesizing highly thermally conductive PCMs by compression-induced construction of large aligned graphite sheets inside PCMs, and it is reported that the resulting PCMs demonstrate homogeneity, no leakage, and superior phase change behavior, which can be easily engineered into devices for efficient thermal energy harvesting by coordinating the sheet orientation with the thermal transport direction. 30 In this work, PEG serves as the PCM, and highly thermally conductive and shape-stabilized PCM (SSPCM) composites at low filler loading are prepared.…”

Section: Introductionmentioning

confidence: 99%

Shape-Stabilized Phase Change Materials with Superior Thermal Conductivity for Thermal Energy Harvesting

Luo

Cui

et al. 2022

ACS Appl. Polym. Mater.

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This work presents the preparation of highly thermally conductive and shape-stabilized phase change composites (SSPCMs) at low filler loading. Polyethylene glycol (PEG) served as the phase change component. The high thermal conductivity is realized by the construction of dual thermally conductive networks based on boron nitride (BN) and expanded graphite (EG). The shape stabilization is obtained by the combined effects of the physical absorption of EG and the chemical crosslinking of epoxy. The prepared composite has a thermal conductivity of 3.907 W m −1 K −1 at a low filler loading when filled with 6.00% EG and 16.00% BN. Correspondingly, the melting enthalpy and crystallization enthalpy can maintain 79.93 and 75.39 J g −1 , respectively. The result indicates that the prepared composite has excellent thermal stability and PEG is firmly stabilized in the composites, it would not leak from the matrix when exposed to high temperature and long heating periods. The experiment also confirms that the prepared composite has superior solar-thermal energy conversion and thermal management ability.

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Section: Introductionmentioning

confidence: 99%

Shape-Stabilized Phase Change Materials with Superior Thermal Conductivity for Thermal Energy Harvesting

Luo

Cui

et al. 2022

ACS Appl. Polym. Mater.

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“…Xiao et al. prepared flexible PEG@Cu/MF composite PCMs with 3D interconnected thermal-conductive additive network via electroless copper (Cu) plating on porous MF ( Xiao et al., 2021 ). The tensile strength of Cu/MF foam reached 72.37 kPa, which was increased by nearly 2 times compared with pristine MF under the same strain of 11%.…”

Section: Fabrication Techniques Of Flexible Composite Pcmsmentioning

confidence: 99%

“…Combing MF with high thermal conductivity additives will help increase the thermal conductivity of flexible PCMs and accelerate the thermal charging/discharging rates ( Figure 12 A). Xiao et al. (2021) prepared flexible PEG@Cu/MF composite PCMs with 3D interconnected thermal-conductive additive network via electroless copper (Cu) plating on porous MF ( Figure 12 C).…”

Section: Advanced Flexible Composite Pcmsmentioning

confidence: 99%

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Flexible engineering of advanced phase change materials

et al. 2022

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“…In comparison with the other two kinds of thermal energy storage, latent heat storage benefits from superior energy storage density, simplicity of exploitation, and solution to temporal and spatial discrepancies between energy supply and demand. , In particular, solid–liquid phase change materials (PCMs) are believed to be ideal thermal energy storage media, and polyethylene glycol (PEG) acts as one of the important solid–liquid PCMs with numerous advantages of superior crystallinity, high energy storage density, biodegradability, low cost, and so forth. − However, due to the volumetric change in size and shape during solid–liquid phase transition, its practical application is severely limited . A variety of methods for packaging PCMs are available such as porous carbon, , metal foams, , porous minerals, , polymer foams, , microcapsules, , fiber/fabric-based composites, − and so forth. Compared to other restraining methods, three-dimensional (3D) porous substances have a rich pore structure, are capable of providing strong capillary forces, and thus prevent the leakage of solid–liquid PCMs, which makes them one of the most promising candidates for the fabrication of phase change composites .…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Performance of Shape-Stable Phase Change Composites Supported by Environment-Friendly and Economical Loofah Sponge Fibers for Thermal Energy Storage

Song

Wang

et al. 2022

Energy Fuels

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Exploration of low-cost, short-process, environment-friendly, and well-behaved phase change composites is of great significance. The renewable biomass loofah sponge (LS) fibers exhibit superior characteristics such as unique microtubules, substantial micrometer-scale channels, and exceptionally high porosities and have great potential of being utilized to exploit high-performance phase change composites. Herein, we proposed a facile strategy for fabricating a novel shape-stable phase change composite (PCLS) supported by LS fiber microtubules incorporating polyethylene glycol (PEG). The LS fibers with a porous tubular structure provided superior encapsulation and mechanical support for PEG. Encapsulation capacity of LS fibers for PEG was not affected by the duration of vacuum impregnation but increased with the increase in PEG concentration (lower than 0.24 g/mL) and then tended to the maximum of ∼56.5%. Differential scanning calorimetry results showed that the resultant PCLS had a melting/crystallization temperature of 41.7/32.3 °C and a heat enthalpy of 98.9/86.1 J/g, which contributed to great thermal energy storage/retrieval capability. The fabricated PCLS also featured excellent thermal cycling reliability for long-term use. Thermogravimetric analysis results suggested that there were two steps of degradation process for the resultant PCLS and corresponded to the decomposition of PEG and LS fibers, respectively. Infrared thermal images demonstrated that the resultant PCLS showed good infrared stealth ability and could effectively reduce infrared heat radiation. Self-assembly temperature control performance measurement indicated that the fabricated PCLS displayed superior temperature regulation ability. Such innovative PCLS holds great promise for widespread applications in solar thermal-energy storage, thermal regulation, thermal insulation, and thermal camouflage and stealth.

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Flexible copper foam-based phase change materials with good stiffness-toughness balance, electro-to-thermal conversion ability and shape memory function for intelligent thermal management

Cited by 76 publications

References 50 publications

Shape-Stabilized Phase Change Materials with Superior Thermal Conductivity for Thermal Energy Harvesting

Shape-Stabilized Phase Change Materials with Superior Thermal Conductivity for Thermal Energy Harvesting

Flexible engineering of advanced phase change materials

Fabrication and Performance of Shape-Stable Phase Change Composites Supported by Environment-Friendly and Economical Loofah Sponge Fibers for Thermal Energy Storage

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