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首页> 外文期刊>Energy Conversion & Management >Design and synthesis of SiO_2/TiO_2/PDA functionalized phase change microcapsules for efficient solar-driven energy storage
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Design and synthesis of SiO_2/TiO_2/PDA functionalized phase change microcapsules for efficient solar-driven energy storage

机译：SiO_2 / TiO_2 / PDA官能化相变微胶囊的设计和合成用于高效的太阳能驱动储能

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摘要

To improve the solar-thermal conversion efficiency of encapsulated phase change materials (PCM), a novel hierarchical SiO2/TiO2/polydopamine (ES-T-PDA) composite shell was designed and synthesized through inter layer arrangement on an encapsulated PCM. The corresponding structures, chemical compositions, crystallinity, and thermal induction capacity of the ES-T-PDA nano/microcapsule shell was extensively investigated. The articulated system attained phase-change enthalpies around 125.92 J/g, with a thermal heating increase of similar to 2.16 +/- 0.34 degrees C due to stimulated light-driven localized heating for efficient solar energy storage. This study confirmed that the combination of SiO2, TiO2 and PDA layered shell was a practical way not only to enhance the structural stability, durability and solar photocatalytic activity but also to promote localized surface photo thermal effect due to light scattering effect and visible light absorption. By coupling these two features, the structural design developed in this work displays a considerable prospect for straightforward solar energy employment in various PCM solar-thermal conversion applications such as temperature management of greenhouses, solar water heating systems, solar cookers, and solar-thermal electricity generating systems.
机译：为了提高封装相变材料（PCM）的太阳能转换效率，通过在封装的PCM上的层间布置设计并合成了一种新的等级SiO 2 / TiO2 /聚二胺（ES-T-PDA）复合壳。广泛研究ES-T-PDA纳米/微胶囊壳的相应结构，化学组合物，结晶度和热感应能力。铰接系统实现了相变焓约为125.92J / g，由于刺激的光驱动的局部加热，具有高效的太阳能储存的升温，热加热增加。该研究证实，SiO 2，TiO 2和PDA层状壳的组合不仅是提高结构稳定性，耐久性和太阳能光催化活性的实用方式，而且还引起了由于光散射效果和可见光吸收而促进局部表面光热效应。通过耦合这两个特征，在这项工作中开发的结构设计对各种PCM太阳能热转换应用中的直接太阳能就业显示了相当大的前景，例如温室，太阳能供水系统，太阳能炊具和太阳能电力的温度管理生成系统。

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