Hierarchically interconnected porous scaffolds for phase change materials with improved thermal conductivity and efficient solar-to-electric energy conversion

Nanoscale ◽  
2017 ◽  
Vol 9 (45) ◽  
pp. 17704-17709 ◽  
Author(s):  
Jie Yang ◽  
Peng Yu ◽  
Li-Sheng Tang ◽  
Rui-Ying Bao ◽  
Zheng-Ying Liu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Phase Change ◽  
Energy Conversion ◽  
Phase Change Materials ◽  
Electric Energy ◽  
High Thermal Conductivity ◽  
Porous Scaffolds ◽  
Composite Phase Change Materials

Hierarchically interconnected porous scaffolds endow shape-stabilized composite phase change materials with high thermal conductivity and efficient solar-to-electric energy conversion ability.

An ice-templated assembly strategy to construct graphene oxide/boron nitride hybrid porous scaffolds in phase change materials with enhanced thermal conductivity and shape stability for light–thermal–electric energy conversion

2016 ◽  
Vol 4 (48) ◽  
pp. 18841-18851 ◽  
Author(s):  
Jie Yang ◽  
Li-Sheng Tang ◽  
Rui-Ying Bao ◽  
Lu Bai ◽  
Zheng-Ying Liu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Phase Change ◽  
Energy Conversion ◽  
Phase Change Materials ◽  
Electric Energy ◽  
Porous Scaffolds ◽  
Shape Stability ◽  
Assembly Strategy ◽  
Enhanced Thermal Conductivity

Multifunctional phase change materials for light-thermal-electric energy conversion are fabricated by an ice-templated assembly strategy.

scholarly journals Thermal Properties of PEG/Graphene Nanoplatelets (GNPs) Composite Phase Change Materials with Enhanced Thermal Conductivity and Photo-Thermal Performance

2018 ◽  
Vol 8 (12) ◽  
pp. 2613 ◽  
Author(s):  
Lihong He ◽  
Hao Wang ◽  
Hongzhou Zhu ◽  
Yu Gu ◽  
Xiaoyan Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Phase Change ◽  
Energy Conversion ◽  
Phase Change Materials ◽  
Near Infrared ◽  
Graphene Nanoplatelets ◽  
Solar Irradiation ◽  
Blending Method ◽  
Conduction Pathway ◽  
Composite Phase Change Materials

This paper mainly concentrates on the thermal conductivity and photo-thermal conversion performance of polyethylene glycol (PEG)/graphene nanoplatelets (GNPs) composite phase change materials (PCMs). The temperature-assisted solution blending method is used to prepare PCM with different mass fraction of GNPs. According to the scanning electron microscope (SEM), GNPs are evenly distributed in the PEG matrix, forming a thermal conduction pathway. The Fourier transform infrared spectra (FT-IR) and X-ray diffraction (XRD) results show that the composites can still inherit the crystallization structure of PEG, moreover, there are only physical reactions between PEG and GNPs rather than chemical reactions. Differential scanning calorimeter (DSC) and thermal conductivity analysis results indicate that it may be beneficial to add a low loading ration of GNPs to obtain the suitable latent heat as well as enhance the thermal conductivity of composites. To investigate the change in the rheological behavior due to the effect of GNPs, the viscosity of the composites was measured as well. The photo-thermal energy conversion experiment indicates that the PEG/GNPs composites show better performance in photothermal energy conversion, moreover, the Ultraviolet-visible-Near Infrared spectroscopy is applied to illustrate the reasons for the higher absorption efficiency of PEG/GNPs for solar irradiation.

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