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Recently, researchers from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences developed a graphene-based composite phase change material
with high photothermal conversion efficiency through a synthesis strategy.
The composite phase change material has excellent phase change performance and photothermal conversion ability, which provides a new idea
for the large-scale preparation of graphene-based photothermal conversion composite phase change materials.
Graphene-based composite phase change materials can solve the leakage problem in the phase change process of phase change materials, and have excellent light absorption capacity, which has potential
in the field of solar thermal conversion and storage.
However, the current preparation methods of graphene-based composite phase change materials involve a multi-step process, which is usually complex, time-consuming and energy-consuming, which hinders their further application
.
Based on this, the researchers used a simple and direct one-step strategy to fill the polyethylene glycol phase change material into the graphene oxide network structure hydrogel in situ to construct a graphene-based stereotyped composite phase change material
.
The composite phase change material has a high load capacity of phase change material, and can maintain a stable phase change enthalpy value after 1000 cold and hot cycles, showing excellent phase change heat storage performance
.
