n-Octadecane/novel porous carbon composite phase-change materials (PCMs) containing a novel porous carbon as the supporting material for n-octadecane were successfully fabricated by vacuum impregnation. The novel porous carbon was first prepared using functionalized polystyrene nanoparticles as a template and soluble starch as a carbon source. The porous carbon spheres can adsorb n-octadecane, preventing them from leaking during the phase-change procedure, and providing them with high thermal conductivity as well as good mechanical and thermal stability. Results show that the novel porous carbon possesses a multi-porous and regular spherical structure with a specific surface area of 1100 cm²/g. Fourier-transform infrared spectroscopy and scanning-electron-microscopy images prove that n-octadecane/novel porous carbon composite PCMs were successfully prepared and exhibited a regular spherical profile. Differential scanning calorimetry reveals that the composite PCMs have an excellent energy storage property, and the latent heat can reach 170.5 J/g, which is higher than the theoretical value. Furthermore, the composite PCMs exhibited an outstanding thermal stability after 100 repeated thermal cycles, and the thermal conductivity were improved up to 0.631 W/(m∙K), which enhanced by 266% compared with n-octadecane. The composite PCMs also displayed a good shape stability without any leakage during heating at 40 °C. These results confirm that the composite PCMs are promising for thermal energy-storage application systems.

Ñ -Octadecane /含有新型多孔碳作为支撑材料为新型多孔性碳复合物的相变材料（PCMS）ñ -octadecane成功地被真空浸渍制造。首先使用官能化的聚苯乙烯纳米粒子作为模板，可溶性淀粉作为碳源制备新型多孔碳。多孔碳球可以吸附正十八烷，防止它们在相变过程中泄漏，并为它们提供高导热率以及良好的机械和热稳定性。结果表明，新型多孔碳具有多孔规则球形结构，比表面积为1100 cm ^2。/G。傅里叶变换红外光谱和扫描电子显微镜图像证明，已成功制备了正十八烷/新颖的多孔碳复合材料PCM，并显示出规则的球形轮廓。差示扫描量热法表明，复合PCM具有良好的储能性能，潜热可达到170.5J / g，高于理论值。此外，复合PCM经过100次重复热循环后表现出出色的热稳定性，热导率提高到0.631 W /（m∙K），与n-相比提高了266％。十八烷。复合PCM也显示出良好的形状稳定性，在40°C的加热过程中没有任何泄漏。这些结果证实了复合PCM对于热能存储应用系统是有前途的。