High Thermal Effusivity Nanocarbon Materials for Resonant Thermal Energy Harvesting

Zhang, Ge; Koman, Volodymyr B.; Shikdar, Tafsia; Oliver, Ronald J.; Perez-Lodeiro, Natalia; Strano, Michael S.

doi:10.1002/smll.202006752

Cited by 18 publications

(10 citation statements)

References 70 publications

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“…Generally, thermally conductive nanofillers, such as CNTs, graphene, expanded graphite (EG), and metal nanoparticles, are used to improve the thermal conductivity of PCMs. , Benefiting from the advantages of these materials, the compatible incorporation of thermally conductive nanofillers in GAs can yield high-performance thermally conductive frameworks. Liang et al reported shape-stabilized composite PCMs encapsulated with hybrid graphene aerogels (HGAs) consisting of GO and graphene.…”

Section: Carbon Aerogel-based Pcmsmentioning

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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Section: Carbon Aerogel-based Pcmsmentioning

confidence: 99%

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

et al. 2022

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“…In contrast, extra additives result in disadvantages, such as a decrease in enthalpy, poor stability in long-term utilization, and increased cost. [34,35] More importantly, nanomaterials are prone to aggregation or sedimentation and cause deterioration of the heat transfer pathway during the long-term energy charging and discharging process. [36] The reason for the low thermal conduction efficiency of nanomaterials enhanced PCM composite resulting from the uneven dispersing of nanomaterials can be divided into two: the poor dispersing ability of nanomaterials in PCMs owing to unsatisfactory compatibility and density difference, and the aggregation of nanomaterials during long-term use.…”

Section: Nanomaterials Enhanced Thermal Conductivity Analysismentioning

confidence: 99%

Phase Change Thermal Energy Storage Enabled by an In Situ Formed Porous TiO₂

Liu

Xiao

Zhao

et al. 2022

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leakage during the phase transition process; [8] c) fabrication shape stabilization via a chemical grafting strategy on some functional group active materials; [9,10] and d) electrospinning strategy. [11] Among the numerous reports on the shape stabilization of PCMs, the physical blending method stands out because of its practical operation technique and almost no waste emissions. [12][13][14] However, the capillary force, which plays a critical role in the adsorption of liquid-state PCMs, results in challenges for the complete adsorption of liquid PCMs owing to the inherent surface tension between the liquid and solid interfaces. Herein, for the first time, we use the practical operation and no-emission advantages of the physical blending method, avoiding the energy storage density shrinkage resulting from the uneven adsorption caused by capillary force.Capillary force, which dominates the adsorption capacity of supporting materials toward LSPCMs, can be calculated via the Young-Laplace equation: [15] ρ θ = 2 cos / p r (1)where p, ρ, θ, and r are the capillary force, the surface tension of melted PCMs, the wetting angle between PCMs and supporting material, and the radius of the supporting material pore, respectively. If the pore size of the supporting material is small, the capillary force may be sufficient to maintain the liquid PCMs in the phase transition cycles, leading to better thermal reliability and stability. Therefore, micro/nanoscale pores are good choices for the shape-stabilization of PCMs and for enhancing the thermal reliability of PCMs because of the strong capillary force. [7,16] In contrast, surface tension inhibits complete contacting or entry between supporting materials and PCMs, resulting in an air chamber, which decreases the energy storage density and thermal interfaces, making the physical blending method less desirable (Figure 1). [17,18] Manipulating surface characteristics on porous materials is a common way to enhance the compatibility between supporting materials and PCMs. [17] For example, Wang et al. found that dopamine can be adopted to modify the surface of expanded vermiculite (EVM) to promote the phase change behavior and improve the heat storage characteristics of polyethylene glycol (PEG)/ EVM-dopamine (EVMX) form-stable composite. [19] Zhang et al. realized that modifying the surface polarity of copper foam with superhydrophobic/superhydrophilic properties would be Uneven and insufficient encapsulation caused by surface tension between supporting and phase change materials (PCMs) can be theoretically avoided if the encapsulation process co-occurs with the formation of supporting materials in the same environment. Herein, for the first time, a one-pot one-step (OPOS) protocol is developed for synthesizing TiO 2 -supported PCM composite, in which porous TiO 2 is formed in situ in the solvent of melted PCMs and directly produces the desired thermal energy storage materials with the completion of the reaction. The preparation features straightforward operation and high environ...

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“…Carbon nanostructures have found a wide variety of applications over the years thanks to their electronic and thermal conductivity, low density, and high mechanical strength, as well as the ability to undergo chemical functionalization to further tune their properties as needed for the intended use [39]. They are being studied especially for energy [40] and catalysis [41][42][43], including electro-catalysis [44,45] and nanozymes [46], as well as for the development of advanced electronic applications [47], including supercapacitors [48,49] and batteries [50], wearable electronics [51], electro-catalytic water-splitting [52], electromagnetic interference (EMI) shielding materials [53], molecular magnets [54], thermal-energy harvesting [55], photo-detectors [56], and electrochemical sensors [57]. In particular, in the area of sensing [58], recent developments have been made in the areas of nano-mass and nano-force sensors [59], gas sensors [60], biosensors [61], temperature sensors [62], and the growing field of touch or motion-driven sensors, or "haptics" [63].…”

Section: Carbon Nanostructures Properties and Usesmentioning

confidence: 99%

Carbon Nanostructures Decorated with Titania: Morphological Control and Applications

et al. 2021

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Nanostructured titania (TiO2) is the most widely applied semiconducting oxide for a variety of purposes, and it is found in many commercial products. The vast majority of uses rely on its photo-activity, which, upon light irradiation, results in excited states that can be used for diverse applications. These range from catalysis, especially for energy or environmental remediation, to medicine—in particular, to attain antimicrobial surfaces and coatings for titanium implants. Clearly, the properties of titania are enhanced when working at the nanoscale, thanks to the increasingly active surface area. Nanomorphology plays a key role in the determination of the materials’ final properties. In particular, the nucleation and growth of nanosized titania onto carbon nanostructures as a support is a hot topic of investigation, as the nanocarbons not only provide structural stability but also display the ability of electronic communication with the titania, leading to enhanced photoelectronic properties of the final materials. In this concise review, we present the latest progress pertinent to the use of nanocarbons as templates to tailor nanostructured titania, and we briefly review the most promising applications and future trends of this field.

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High Thermal Effusivity Nanocarbon Materials for Resonant Thermal Energy Harvesting

Cited by 18 publications

References 70 publications

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

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

Phase Change Thermal Energy Storage Enabled by an In Situ Formed Porous TiO₂

Carbon Nanostructures Decorated with Titania: Morphological Control and Applications

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High Thermal Effusivity Nanocarbon Materials for Resonant Thermal Energy Harvesting

Cited by 18 publications

References 70 publications

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

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

Phase Change Thermal Energy Storage Enabled by an In Situ Formed Porous TiO2

Carbon Nanostructures Decorated with Titania: Morphological Control and Applications

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Phase Change Thermal Energy Storage Enabled by an In Situ Formed Porous TiO₂