The preparation and characterization of phase change material microcapsules with multifunctional carbon nanotubes for controlling temperature

Niu, Shaoshuai; Kang, Moyun; Liu, Yuqi; Lin, Wei; Liang, Chenchen; Zhao, Yiqiang; Cheng, Jiaji

doi:10.1016/j.energy.2023.126652

Cited by 12 publications

(5 citation statements)

References 36 publications

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“…Heat balance is a big issue for TE devices, which hinders further development and application of TE devices in reality . As the time goes by, the device could achieve a balanced temperature leading dramatically to the voltage reduction to zero.…”

Section: Resultsmentioning

confidence: 99%

“…Heat balance is a big issue for TE devices, which hinders further development and application of TE devices in reality. 27 As the time goes by, the device could achieve a balanced temperature leading dramatically to the voltage reduction to zero. To better utilize the heat emitted by the human body and improving the thermoelectric conversion efficiency, it is necessary to simultaneously convert thermal energy into electrical energy while storing excess heat to achieve higher energy utilization.…”

Section: Phase-transition-promoted Tetmentioning

confidence: 99%

“…Microencapsulated phase change materials (MPCM) have great potential in waste heat utilization, temperature control, and electronic cooling. 26,27 Therefore, melamine-formaldehyde resin microencapsulated octadecane and paraffin were prepared and coated on the surface of the TET, achieving larger energy conversion and heat storage functions. The asprepared TET integrated 72 PN segments and MPCM surface coatings could output a maximum power of ∼270 nW at ΔT = 6.6 K.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, to better utilize the heat emitted by the human body and improving the thermoelectric conversion efficiency, it is necessary to simultaneously convert thermal energy into electrical energy while storing excess heat to achieve higher energy utilization. Microencapsulated phase change materials (MPCM) have great potential in waste heat utilization, temperature control, and electronic cooling. , Therefore, melamine-formaldehyde resin microencapsulated octadecane and paraffin were prepared and coated on the surface of the TET, achieving larger energy conversion and heat storage functions. The as-prepared TET integrated 72 PN segments and MPCM surface coatings could output a maximum power of ∼270 nW at Δ T = 6.6 K.…”

Section: Introductionmentioning

confidence: 99%

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Phase-Transition-Promoted Thermoelectric Textiles Based on Twin Surface-Modified CNT Fibers

Yu,

Liu,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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With the fast development of new science and technology, wearable devices are in great demand in modern human daily life. However, the energy problem is a long-lasting issue to achieve real smart, wearable, and portable devices. Flexible thermoelectric generators (TEGs) based on thermoelectric conversion systems can convert body waste heat into electricity with excellent flexibility and wearability, which shows a new direction to solving this issue. Here in this work, polyethylenimine (PEI) and gold nanoparticles (Au NPs) twin surface-modified carbon nanotube fibers (CNTFs) were designed and prepared to fabricate thermalelectric textiles (TET) with high performance, good air stability, and highefficiency power generation. To better utilize the heat emitted by the human body, microencapsulated phase change materials (MPCM) were coated on the hot end of the TET to achieve the phase-transition-promoted TET. MPCM-coated TET device could generate 25.7% more energy than the untreated control device, which indicates the great potential of the phase-transition-promoted TET.

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Section: Resultsmentioning

confidence: 99%

Section: Phase-transition-promoted Tetmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phase-Transition-Promoted Thermoelectric Textiles Based on Twin Surface-Modified CNT Fibers

Yu,

Liu,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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show abstract

“…To improve the thermal conductivity, the introduction of highly thermally conductive carbon-based materials, such as expanded graphite (EG) [39][40][41], graphite/graphene nanosheets [42][43][44], graphene oxide [45,46], and carbon nanotubes [47,48], into PCMs to form effective heat transfer channels in the composites is the most convenient and commonly used method. In addition, fillers, such as boron nitride [49], metal nanoparticles [50], etc., are also included.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Thermal Properties of Propyl Palmitate-Based Phase Change Composites with Enhanced Thermal Conductivity for Thermal Energy Storage

2023

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Phase change materials (PCMs), which can absorb and release large amounts of latent heat during phase change, have been extensively studied for heat storage and thermal management. However, technical bottlenecks regarding low thermal conductivity and leakage have hindered practical applications of PCMs. In this paper, a simple, economical, and scalable absorption polymerization technique is proposed to prepare the polymethyl methacrylate/propyl palmitate/expanded graphite (MPCM/EG) phase change composites by constructing the microencapsulated phase change materials (polymethyl methacrylate/propyl palmitate, MPCM) with core-shell structures in the three-dimensional (3D) EG networks, taking propyl palmitate as the PCM core, polymethyl methacrylate (PMMA) as the shell, and long-chain “worm-like” EG as the thermally conductive networks. This technique proved to be a more appropriate combinatorial pathway than direct absorption of MPCM via EG. The MPCM/EG composites with high thermal conductivity, high enthalpy, excellent thermal stability, low leakage, and good thermal cycle reliability were prepared. The results showed that the MPCM-80/EG-10 composite demonstrated a high thermal conductivity of 3.38 W/(m·K), a phase change enthalpy up to 152.0 J/g, an encapsulation ratio of 90.3%, outstanding thermal stability performance, and long-term thermal cycle reliability when the EG loading is 10% and propyl palmitate is 80%. This research offers an easy and efficient approach for designing and fabricating phase change composites with promising applications in diverse energy-saving fields, such as renewable energy collection, building energy conservation, and microelectronic devices thermal protection.

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Recent advances in nano-enhanced phase change materials

Zhang

Liu

et al. 2023

J Mater Sci

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The preparation and characterization of phase change material microcapsules with multifunctional carbon nanotubes for controlling temperature

Cited by 12 publications

References 36 publications

Phase-Transition-Promoted Thermoelectric Textiles Based on Twin Surface-Modified CNT Fibers

Phase-Transition-Promoted Thermoelectric Textiles Based on Twin Surface-Modified CNT Fibers

Preparation and Thermal Properties of Propyl Palmitate-Based Phase Change Composites with Enhanced Thermal Conductivity for Thermal Energy Storage

Recent advances in nano-enhanced phase change materials

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