Shape‐stabilized phase change material with enhanced thermal conductivity fabricated based on biomimetic polymerization and in situ reduction of Cu ions,International Journal of Energy Research

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Shape‐stabilized phase change material with enhanced thermal conductivity fabricated based on biomimetic polymerization and in situ reduction of Cu ions
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-09-14 , DOI: 10.1002/er.5898
Junkai Gao ₁ , Xi Tang ₁ , Yan Chen ₁ , Yi Liu ₁

Affiliation

The thermal conductivity of shape‐stabilized phase change material of polyethylene glycols/porous carbon microspheresdoping withcopper particles (PEG/CARM‐Cu) was enhanced based on the adsorption and in situ reduction of Cu²⁺ using polydopamine microsphere (PDAM)material as the adsorbent. The synthesis of PDAM has the merits of simplicity and environmental friendliness, and the in situ reduction of Cu²⁺ through pyrolysis has the advantages of easy operation and cost effectiveness. Copper particles prepared by in situ reduction were tightly fixed on the surface of the support ofporous carbon microsphere (CARM), which avoided the sedimentation of copper particles during the phase change process of PEG/CARM‐Cu. According to the SEM, TEM, XRD, TGA and DSC test results, PEG/CARM‐Cu possessed favorable thermal reliability and stability, and the phase change enthalpy of PEG/CARM‐Cu‐2 could reach 101.50 J/g. Additionally, the thermal conductivity of PEG/CARM‐Cu‐2 (0.497 W/(m·K)) was enhanced by 93.3% compared to that ofpure PEG (0.257 W/(m·K)). Therefore, the PEG/CARM‐Cu developed in this paper possessed great potential for real applications.

中文翻译：

基于仿生聚合和原位还原铜离子制造的形状稳定的具有增强的导热性的相变材料

以聚多巴胺微球（PDAM）为吸附剂，对Cu ²⁺进行吸附和原位还原，可提高掺杂铜颗粒（PEG / CARM-Cu）的聚乙二醇/多孔碳微球的形状稳定相变材料的导热性。。PDAM的合成具有简单，环保，可原位还原Cu ²⁺的优点。通过热解的优点是易于操作和成本效益。通过原位还原制得的铜颗粒被牢固地固定在多孔碳微球体（CARM）的表面上，避免了PEG / CARM-Cu相变过程中铜颗粒的沉淀。根据SEM，TEM，XRD，TGA和DSC测试结果，PEG / CARM-Cu具有良好的热可靠性和稳定性，PEG / CARM-Cu-2的相变焓可达到101.50 J / g。此外，与纯PEG（0.257 W /（m·K））相比，PEG / CARM‐Cu-2（0.497 W /（m·K））的热导率提高了93.3％。因此，本文开发的PEG / CARM-Cu具有巨大的实际应用潜力。

更新日期：2020-09-14

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