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首页> 外文期刊>Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion >Shape-stabilized phase change materials based on polyethylene glycol/porous carbon composite: The influence of the pore structure of the carbon materials
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Shape-stabilized phase change materials based on polyethylene glycol/porous carbon composite: The influence of the pore structure of the carbon materials

机译：基于聚乙二醇/多孔碳复合材料的形状稳定相变材料：碳材料孔结构的影响

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The phase change behaviors of polyethylene glycol (PEG)/porous carbon composites are extensively studied. Three types of shape-stabilized PCMs were prepared using expanded graphite (EG), active carbon (AC) and ordered mesoporous carbon (CMK-5) as supporting materials with various pore structures. They have distinct influences on the phase change behaviors of PEG/porous carbon composites. The highest stabilized PEG content is 70 wt% for AC and 90% for both EG and CMK-5. The phase change enthalpy and the PEG crystallinity increases in the order AC < CMK-5 < EG at the same PEG content in the composite. The study suggests that pores with micrometer size exhibit the same level of shape stabilization ability as the pores with nanometer size, while being able to minimize the enthalpy loss due to the interactions between the pores and the PEG chains. This study will provide insights into the design of composite PCMs through tailoring the pore structures.
机译：聚乙二醇（PEG）/多孔碳复合材料的相变行为得到了广泛的研究。使用膨胀石墨（EG），活性炭（AC）和有序介孔碳（CMK-5）作为具有各种孔结构的支撑材料，制备了三种类型的形状稳定的PCM。它们对PEG /多孔碳复合材料的相变行为具有明显的影响。最高的稳定PEG含量对于AC为70 wt％，对于EG和CMK-5均为90％。在复合物中相同的PEG含量下，相变焓和PEG结晶度以AC

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