Improved Anisotropic Thermal Transfer Property of Form-Stable Phase Change Material Supported by 3D Bionic Porous Copper
Improved Anisotropic Thermal Transfer Property of Form-Stable Phase Change Material Supported by 3D Bionic Porous Copper
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DOI：
10.1021/acssuschemeng.2c06396
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发表时间：
2023-02
期刊：
影响因子：
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通讯作者：
Pan Guo;Nan Sheng;Ruijie Zhu;Chun Jiang Zhu;Zhonghao Rao
中科院分区：
文献类型：
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作者：
Pan Guo;Nan Sheng;Ruijie Zhu;Chun Jiang Zhu;Zhonghao Rao
针对石蜡等有机相变材料传热性能低、形貌不稳定的特点，采用木模板法制备了一种具有木质纹理和细胞壁结构的新型各向异性仿生结构三维多孔铜骨架，并将其用作相变材料的支撑骨架。仿生多孔铜很好地保持了木材的多孔通道结构。由于这些木质细胞壁和间隙的存在，复合相变材料表现出高度改进的各向异性导热率和良好的防渗漏特性。结果表明，复合材料在垂直方向（6.7 W m–1K–1）和水平方向（2.3 W m–1K–1）的导热系数可分别达到石蜡（0.25 W m–1K–1）的26.8和9.2倍。这项工作为设计复合相变材料各向异性导热结构提供了新颖的策略，在热能存储和热管理方面具有广阔的应用前景。
In response to the characteristics of low heat transfer and unstable morphology of organic phase change materials (PCMs), such as paraffin, a novel anisotropic biomimetic-structured three-dimensional porous Cu skeleton with wood texture and cell wall structure was prepared by the wood template method and was used as a support skeleton for PCMs. The bionic porous Cu maintains the porous channel structure of wood very well. Thanks to the existence of these woody cell walls and interstices, the composite PCMs show highly improved anisotropic thermal conductivity and good antileakage characteristics. The results indicate that the thermal conductivity of the composites in the vertical direction (6.7 W m–1K–1) and the horizontal direction (2.3 W m–1K–1) can reach up to 26.8 and 9.2 times that of paraffin wax (0.25 W m–1K–1), respectively. The novel strategy provided by this work for designing anisotropic thermal conductive structures of composite PCMs presents a promising application in thermal energy storage and thermal management.