Emerging PEG/VO2 dual phase change materials for thermal energy storage

Bai, Kaihao; Li, Chuanchang; Xie, Baoshan; Zhang, Dongyao; Lv, Youfu; Xiao, Junbing; He, Meizhi; Zeng, Xiaoliang; Zeng, Ju‐Lan; Chen, Jian

doi:10.1016/j.solmat.2022.111686

Cited by 27 publications

(5 citation statements)

References 72 publications

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“…The structure and phase change behavior of PECx@PEG PECx@PEG was prepared by vacuum impregnated PEC with PEG [35]. Figure 2 (a) and (b) showed that PEG was successfully entered into the pores of PEC0 and PEC5.…”

Section: 2mentioning

confidence: 99%

A Pleurotus eryngii based biomass porous carbon encapsulated phase change material for efficient thermal energy storage

Hu,

Zhang,

Quan

et al. 2024

Preprint

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With the sharp increase in modern energy consumption, phase change composites with the characteristics of rapid preparation are employed for thermal energy storage to meet the challenge of energy crisis. In this study, a NaCl-assisted carbonization process was used to construct porous Pleurotus eryngii carbon with ultra-low volume shrinkage rate of 2%, which providing enormous space for encapsulation of phase change materials. Such composite possesses exceptional thermal stability, with an absorption rate of 88.24%, a melting enthalpy of 174.87 J/g, and a relative enthalpy efficiency of 97.78%. Consequently, the resultant composites exhibit outstanding performances in storing and releasing thermal energy for photo-thermal, electric-thermal and magnetic-thermal conversion. This study presents a highly valuable strategy into the quick fabrication of phase change composites, facilitating their practical applications in thermal energy storage.

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Section: 2mentioning

confidence: 99%

A Pleurotus eryngii based biomass porous carbon encapsulated phase change material for efficient thermal energy storage

Hu,

Zhang,

Quan

et al. 2024

Preprint

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“…Both pure and doped VO 2 nanoparticles with ultrafine spherical particles, , nanorods, − nanobelts, nanosheets, and core–shell structures, ,− have been synthesized to improve the thermochromic properties of organic nanocomposite films. Additionally, various kinds of transparent organics, including PU ,, or WPU, PDMS, − PEG, , PVA, , PVP, , EVA, PVC, PE, AA, , methacrylic acid/ethyl acrylate copolymer, ionic liquid, , and treated wood, , have been applied as the matrix materials.…”

Section: Vanadium Dioxidementioning

confidence: 99%

Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives

Zhang

Zhou

et al. 2023

Chem. Rev.

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Thermochromic energy efficient windows represent an important protocol technology for advanced architectural windows with energy-saving capabilities through the intelligent regulation of indoor solar irradiation and the modulation of window optical properties in response to real-time temperature stimuli. In this review, recent progress in some promising thermochromic systems is summarized from the aspects of structures, the micro-/mesoscale regulation of thermochromic properties, and integration with other emerging energy techniques. Furthermore, the challenges and opportunities in thermochromic energy-efficient windows are outlined to promote future scientific investigations and practical applications in building energy conservation.

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“…In this way, the shortcoming of low thermal conductivity of polymeric PCMs can be compensated. [ 2b,c,6a,7c,8d,e,9 ] However, the introduction of fillers would occupy the volume of the phase change moiety (PEG), resulting in a decrease in overall crystallinity and enthalpy. In addition, aggregation of fillers can cause a sharp increase in viscosity, leading to difficulties for processing.…”

Section: Introductionmentioning

confidence: 99%

Physical‐Entanglements‐Supported Polymeric Form Stable Phase Change Materials with Ultrahigh Melting Enthalpy

Wang,

Liu,

Zhu

et al. 2024

Advanced Materials

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With the rapid development of new energy and the upgrading of electronic devices, structurally stable phase change materials (PCMs) have attracted widespread attentions from both academia and industries. Traditional cross‐linking, composites or micro‐encapsulation methods for preparation of form stable PCMs usually sacrifice part of the phase change enthalpy and recyclability. Based on the basic polymer viscoelasticity and crystallization theories, in this work, a kind of novel recyclable polymeric PCM is developed by simple solution mixing ultra‐high molecular weight of polyethylene oxide (UHMWPEO) with its chemical identical oligomer PEG. Rheological and leakage‐proof experiments confirm that, even containing 90% of phase change fraction PEG oligomers, long‐term of structure stability of PCMs could be achieved when the molecular weight of UHMWPEO is higher than 7000 kg/mol due to their ultralong terminal relaxation time and large number of entanglements per chain. Furthermore, because of the reduced overall entanglement concentration, phase change enthalpy of PCMs could be greatly promoted, even reaching to approximate 185 J/g, which is larger than any PEG based form stable PCMs in literatures. This work provides a new strategy and mechanism for designing physical entanglements supported form stable PCMs with ultrahigh phase change enthalpies.This article is protected by copyright. All rights reserved

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Emerging PEG/VO2 dual phase change materials for thermal energy storage

Cited by 27 publications

References 72 publications

A Pleurotus eryngii based biomass porous carbon encapsulated phase change material for efficient thermal energy storage

A Pleurotus eryngii based biomass porous carbon encapsulated phase change material for efficient thermal energy storage

Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives

Physical‐Entanglements‐Supported Polymeric Form Stable Phase Change Materials with Ultrahigh Melting Enthalpy

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