Highly Efficient Thermal Energy Storage Using a Hybrid Hypercrosslinked Polymer**

Abstract

In this work, an organic/inorganic hybrid polymer containing siloxyl functional groups was synthesized and applied to encapsulate phase change materials (PCMs). Owing to the mild conditions of the hypercrosslinking reaction, which only requires the addition of ac atalytic amount of aqueous alkaline solution, both organic and inorganic PCMs are tolerated. It is noteworthy that the initial homogeneous state of the reaction mixture allowed the ultimate encapsulation rate of the PCMs and the uniform blending of the thirdn anoadditives with the aim of thermal conductivity enhancement. Further study reveals that the presence of this hybrid hydrophobic polymer in aphase change composite endows the latter with au nique self-cleaning property.T his novel PCM encapsulation protocol is suitable for nanoparticles including carbon-based nanomaterials,m etal oxide nanoparticles,a nd inorganic oxide nanoparticles.Athermal conductivity enhancement of 600 %w as achieved along with 93.7 %l ight-tothermal conversion efficiency with al atent heat of 180 Jg À1 without leakage.

Metal Catalysis with Knitting Aryl Polymers: Design, Catalytic Applications, and Future Trends

“…23,24 The incorporation of metals in POPs opens new possibilities of application to these materials, especially in the field of heterogeneous catalysis being an interesting alternative to inorganic supports. But metal-KAPs have also been employed for thermal energy storage 25,26 as selective filters for small hydrocarbons 27 and even as magnetic sorbents in solid-phase extractions of organics. 28 However, as we mentioned, the revision of these metal-containing KAPs incorporated in other materials or with noncatalytic applications goes beyond the goal of this review.…”

Integration of Magnetic Phase-Change Microcapsules with Black Phosphorus Nanosheets for Efficient Harvest of Solar Photothermal Energy

“…In this sense, shape stabilization technology has emerged as an essential protocol for utilizing solid−liquid PCMs in solar energy storage systems. 2 By means of this technology, solid− liquid PCMs can be stabilized or enwrapped into supporting materials to form shape-stable phase-change composites. 3 Although the use of highly thermally conductive supporting materials has resolved the problems in leakage and poor thermal conductance of PCMs, there is still a room for promoting PCMs in solar photothermal energy storage.…”

“…However, PCMs are obliged to suffer from a series of shortcomings such as high supercooling, low thermal conductance, leakage and migration in the molten state, considerable change in volume during phase transition, potential evaporation, and corrosiveness. In this sense, shape stabilization technology has emerged as an essential protocol for utilizing solid–liquid PCMs in solar energy storage systems . By means of this technology, solid–liquid PCMs can be stabilized or enwrapped into supporting materials to form shape-stable phase-change composites .…”

Recent Advances in Polymer‐Containing Multifunctional Phase‐Change Materials

“…After 300 melting and freezing cycles, the nanocomposite maintained good phase change properties, which indicated good cyclability and high thermal stability. Similarly, our group [87] used a new organic/inorganic hybrid polymer as a supporting material to encapsulate the PCMs. We used sodium hydroxide aqueous solution as a catalyst to complete the super‐crosslinking process of polymers under mild conditions, and then realized the rapid encapsulation of latent heat energy storage materials.…”