Abstract Light-driven, improved thermal conductivity and effective phase change enthalpy of polymeric composite material was prepared by one-pot synthesis approach based on the introduction of chromophoric polymer phase change material in nitrogen-doped porous carbon (NPC). Various characterization techniques were employed to investigate the thermal and structural properties of as-synthesized samples. The composite exhibited a light-to-heat conversion capacity of 72.1% owing to the introduction of environmental friendly and commercially available functional dye molecule in the polymer matrix. In addition, the composite achieved large energy storage efficiency per unit mass up to 180.3 J/g with high crystallinity, close to the maximum value since then documented for cross-linked polymeric composites, as well the composite achieving a thermal conductivity up to 178.3% with low porous carbon addition. The superior thermal storage performance could be ascribed to the advantages of NPC porous structure and interaction with hard segment results free phase change materials (PCMs) in a certain degree and used for high energy storage efficiency. Likewise, the composite revealed stable thermal performance with time saving strategy. This investigation gives an outlook for the synergistic improvement of thermal conductivity, solar-to-heat conversion capacity and latent heat of solid-solid PCMs.

中文翻译：

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基于N掺杂多孔碳的光驱动聚合物复合相变材料的一锅合成增强潜热储存能力和导热性

摘要 基于在氮掺杂多孔碳（NPC）中引入发色聚合物相变材料，通过一锅法制备了光驱动、改善热导率和有效相变焓的聚合物复合材料。采用各种表征技术来研究合成样品的热和结构特性。由于在聚合物基体中引入了环境友好且市售的功能性染料分子，该复合材料的光热转换能力为 72.1%。此外，该复合材料的单位质量能量存储效率高达 180.3 J/g，结晶度高，接近自那时以来记录的交联聚合物复合材料的最大值，以及复合材料的热导率高达 178.3%，且多孔碳添加量低。优越的蓄热性能可归因于NPC多孔结构的优势以及与硬链段的相互作用在一定程度上导致自由相变材料（PCMs）并用于高储能效率。同样，复合材料显示出稳定的热性能和节省时间的策略。这项研究为固体-固体 PCM 的热导率、太阳能热转换能力和潜热的协同改进提供了前景。优越的蓄热性能可归因于NPC多孔结构的优势以及与硬链段的相互作用在一定程度上导致自由相变材料（PCMs）并用于高储能效率。同样，复合材料显示出稳定的热性能和节省时间的策略。这项研究为固体-固体 PCM 的热导率、太阳能热转换能力和潜热的协同改进提供了前景。优越的蓄热性能可归因于NPC多孔结构的优势以及与硬链段的相互作用在一定程度上导致自由相变材料（PCMs）并用于高储能效率。同样，复合材料显示出稳定的热性能和节省时间的策略。这项研究为固体-固体 PCM 的热导率、太阳能热转换能力和潜热的协同改进提供了前景。