chemical peg for energy storage

(PDF) Thermal energy storage properties and thermal reliability of PEG ...

In summary, PP has obvious advantages over traditional activation, and the carbon-supported PEG phase change composite after PP activation is a biochar energy storage material with excellent ...

Phase change materials for thermal energy storage

3.1.1.1. Salt hydrates Salt hydrates with the general formula AB·nH 2 O, are inorganic salts containing water of crystallization. During phase transformation dehydration of the salt occurs, forming either a salt hydrate that contains fewer water molecules: ABn · n H 2 O → AB · m H 2 O + (n-m) H 2 O or the anhydrous form of the salt AB · n H 2 O → …

PEG encapsulated by porous triamide-linked polymers as support for solid-liquid phase change materials for energy storage …

Thermal degradation and stabilization of polyethylene glycol (PEG) with a molecular weight of 6000 have been investigated in order to develop PEG as a thermal energy storage material.

Pore structure modified diatomite-supported PEG composites for thermal energy storage …

The apparent activation energy of PEG in the composite was 1031.85 kJ·mol (-1), which was twice higher than that of the pristine PEG. Moreover, using the nano-silica decorated diatomite as carrier, the maximum PEG load was 66 wt%. The composite PCM was stable in terms of thermal and chemical manners even after 200 cycles of …

Form-stable polyethylene glycol/activated carbon composite …

enhanced thermal conductivity and thermal energy storage and release rate, as well as excellent form stability, which shows promising potentials for the actual applications in thermal energy storage eld. Experimental Chemicals Polyethylene glycol (PEG) with average molecular weight of 2000 was purchased from Beijing Chemical Reagent

Enhanced thermal properties of novel shape-stabilized PEG

The DSC results indicated that the PEG/RMS ss-CPCM was a promising candidate for building thermal energy storage applications due to its large latent heat, …

Crosslinked polymer networks of poly(ethylene glycol) (PEG) and …

They contain significantly good thermal energy storage capacity and chemical compatibility. An accelerated thermal cycle test confirms their reliable nature over 150 melt/freeze cycles. The binary ...

Pore structure modified diatomite-supported PEG composites for thermal energy storage

The apparent activation energy of PEG in the composite was 1031.85 kJ·mol−1, which was twice higher than that of the pristine PEG. Moreover, using the nano-silica decorated diatomite as carrier ...

Accelerated thermal cycle and chemical stability testing of polyethylene glycol (PEG) 6000 for solar thermal energy storage …

DOI: 10.1016/J.SOLMAT.2015.12.023 Corpus ID: 98669907 Accelerated thermal cycle and chemical stability testing of polyethylene glycol (PEG) 6000 for solar thermal energy storage In this experimental study, thermal aging test for investigating the variations in ...

Shape-stable composite phase change materials encapsulated by bio-based balsa wood for thermal energy storage …

In addition, at 400 s, the temperature of MA/CTW-2, PW/CTW-2 and PEG/CTW-2 are 48.4 C, 35.5 C and 31.0 C, respectively. The difference samples temperature can be attributed to the difference phase transition temperature and difference energy storage

Thermal and photo/electro-thermal conversion ...

In this work, expanded graphite/polyethylene glycol (EG/PEG) composites were prepared based on physical adsorption method, the relationship between the …

Improved thermal energy storage behavior of …

PEGs are the potential organic PCMs for thermal energy storage purposes with excellent chemical and thermal stability. In the present work, aluminum oxide nanoparticles were dispersed into …

Induced dipole force driven PEG/PPEGMA form-stable phase change energy ...

Induced dipole force driven PEG/PPEGMA form-stable phase change energy storage materials with high latent heat ... (mPEGMA, M n = 2000, Sigma-Aldrich, Shanghai, China), PEG (M n = 1000, 2000, 4000, 6000, 8000, 10,000, Sinopharm Chemical Reagent Co., Ltd., China ... PGA@PEG SSPCMs would be very promising as latent heat …

Polymeric phase change material networks based on multi-telechelic polyethylene glycol-derived multimer structures for thermal energy storage ...

The chemical structure of PEG-based PCMs was confirmed by the FTIR spectrum (Fig. 1 b, Figure S1).The characteristic absorption peak of pristine PEG at around 3400 cm −1, 2884 cm −1 and 1112 cm −1 are attributed to the stretching vibration of hydroxyl, methylene and ether bonds, respectively. ...

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

The thermal storage capacity of 70–113 J g−1 and phase transition temperature range of 30–70 °C for PEG/VO 2/EG were determined by DSC. Moreover, compared with pure PEG, the thermal conductivity of PEG/VO2 /EG 0.10 was increased by up to 93.75%, and the thermal storage capacity was increased by up to 59.35% …

Fabrication and properties of polyethylene glycol-modified wood ...

Full Article. Fabrication and Properties of Polyethylene Glycol-Modified Wood Composite for Energy Storage and Conversion. Yun Li, a Xianjun Li, a, * Dandan Liu, b Xiyi Cheng, a Xia He, a Yiqiang Wu, a Xingong Li, a and Qiongtao Huang c Green fir wood (Pseudotsuga menziesii) was modified with polyethylene glycol (PEG) to produce wood …

Thermal analysis and heat capacity study of polyethylene glycol (PEG) phase change materials for thermal energy storage …

Semantic Scholar extracted view of "Thermal analysis and heat capacity study of polyethylene glycol (PEG) phase change materials for thermal energy storage applications" by Y. Kou et al. DOI: 10.1016/J.JCT.2018.08.031 Corpus ID: 105750355 Thermal analysis ...

Full-wood photoluminescent and photothermic materials for thermal energy storage …

Conclusions. In summary, a full-wood photoluminescent and photothermic material with delignified wood as supporting material, CQDs derived from the removed lignin as backfill fluorescent material, and PEG as phase change materials is reported. Compare with other CQDs excited by UV light, the CQDs exhibit two emission …

Polyethylene Glycol/Rice Husk Ash Shape-Stabilized Phase …

This work introduces a straightforward and economical strategy for revitalizing thermal energy storage in PEG composites confined within RHA-based …

Polyethylene glycol infiltrated biomass-derived porous carbon …

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 …

Accelerated thermal cycle and chemical stability testing of ...

However, the thermal conductivity depends both on the temperature and physical state (liquid or solid) of the material. 33 Sharma et al. 20 investigated PEG 6000 as a potential energy storage ...

Cellulose Nanofibrils Endow Phase-Change Polyethylene Glycol …

Here, we introduce the advantage of solid-to-gel transition to overcome the drawbacks of typical solid-to-liquid counterparts in applications related to thermal energy …

Polyethylene glycol infiltrated biomass-derived porous carbon phase change composites for efficient thermal energy storage …

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 …

Effects of graphene doping on shape stabilization, thermal energy ...

The difference in energy storage capabilities of PCM composites is determined by the energy storage capacity of pure PCM as well as the rate of PCM adsorption. ... The findings from the FT-IR experiment demonstrated that PolyHIPE@Graphene composites filled with PEG have a high degree of chemical …

3D flower-like CuO@PEG composite phase change materials with photo response for applications in energy conversion and storage …

Subsequently, CuO-100@PEG-50, CuO-100@PEG-60, CuO-100@PEG-70, and CuO-100@PEG-80 composite PCMs with different PEG loadings were prepared by the vacuum impregnation method. As shown in Fig. 4 a~d, there is no significant difference in the overall morphology of the four samples.

Stable and reliable PEG/TiO2 phase change composite with …

In addition, the data on heat storage efficiency shows that the CPCMs 1.50 sample has a thermal storage efficiency of over 98 %, indicating that over 98 % of the PEG in the TiO 2 aerogel framework can undergo phase …

Form-stable polyethylene glycol/activated carbon composite

The PEG/AC CPCM with 80 mass% PEG loading displayed reasonable latent heat, suitable phase transition temperature, good thermal stability and reliability, …

Enhanced properties of mica-based composite phase change materials for thermal energy storage …

For Mica/PEG, Md/PEG, and Md/EG/PEG, the mass loss of the decomposition of loaded PEG molecules was 53.57%, 57.16%, and 76.66%, respectively. This indicates that the loading capacity of the mica matrix modified by KH-550 has been increased, and the loading capacity of the composite PCMs has been significantly …

Thermal energy storage properties and thermal reliability of PEG…

Accordingly, PEG/BC-1 and PEG/BC-2 have potential applications in solar energy storage and energy efficiency buildings. Thermal reliability of form-stable composite PCMs The composite PCM must be stable in terms of chemical and thermal manner after melting and freezing thermal cycles.

Accelerated thermal cycle and chemical stability testing of ...

The FT-IR spectra do not show any noticeable changes in the peaks which confirm its compositional stability even after the higher number of thermal cycles. Thermal and chemical reliability tests of PEG 6000 along with the techno-economic analysis have shown that this PCM has a significant potential to be used as a thermal energy storage …

Effects of graphene doping on shape stabilization, thermal energy storage and thermal conductivity properties of PolyHIPE/PEG …

Moreover, compared with pure PEG, the thermal conductivity of PEG/VO2/EG0.10 was increased by up to 93.75%, and the thermal storage capacity was increased by up to 59.35% compared with PEG/VO2.

Synthesis and thermal properties of polystyrene-graft-PEG copolymers as new kinds of solid–solid phase change materials for thermal energy storage

A series of polystyrene-graft-PEG 6000 copolymers were synthesized as new kinds of polymeric solid–solid phase change materials (SSPCMs).The synthesized SSPCMs storage latent heat as the soft segments PEG 6000 of the copolymers transform from crystalline phase to amorphous phase and therefore they can keep its solid state …

Electrochemical Self-Assembly of a 3D Interpenetrating Porous Network PEDOT-PEG-WS2 Nanocomposite for High-Efficient Energy Storage …

Like interchange bridges used in traffic, 3D interpenetrating porous network (3D IPN) nano-/micromaterials are of great significance in the field of energy storage. Here, we developed a 3D IPN poly(3,4-ethyleenedioxythiophene)-poly(ethylene glycol)-WS2 (PEDOT-PEG-WS2) nanocomposite through the electrochemical self-assembly of EDOT and WS2 …

Preparation of a novel PEG composite with halogen-free flame retardant supporting matrix for thermal energy storage …

Section snippets Materials PEG 2000, absolute ethanol, triethylamine, diethyl ether and aqueous ammonia (25 wt%) were purchased from Sinopharm Chemical Reagent Co., Ltd. Aminopropyltriethoxysilane was provided by Shanghai Rising Chemical Co., Ltd. Phosphorus oxychloride was purchased from Jiangsu Changyu Chemical Co., …

Novel PEG/SiO2/SiO2–modified expanded graphite composite

The facile preparation and high thermal performance make the PEG/SiO2/MEGR composite competitive for thermal energy storage applications. A …

Effects of graphene doping on shape stabilization, thermal energy ...

Moreover, compared with pure PEG, the thermal conductivity of PEG/VO2/EG0.10 was increased by up to 93.75%, and the thermal storage capacity was increased by up to 59.35% compared with PEG/VO2.

Mica-stabilized polyethylene glycol composite phase change

Mica was used as a supporting matrix for composite phase change materials (PCMs) in this work because of its distinctive morphology and structure. Composite PCMs were prepared using the vacuum impregnation method, in which mica served as the supporting material and polyethylene glycol (PEG) served as the PCM. Fourier transform …