Hierarchically interconnected porous scaffolds for phase change materials with improved thermal conductivity and efficient solar-to-electric energy conversion,Nanoscale

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Hierarchically interconnected porous scaffolds for phase change materials with improved thermal conductivity and efficient solar-to-electric energy conversion
Nanoscale ( IF 5.8 ) Pub Date : 2017-10-30 00:00:00 , DOI: 10.1039/c7nr05449a
Jie Yang _{1,

2,

3,

4,

5} , Peng Yu _{1,

2,

3,

4,

5} , Li-Sheng Tang _{1,

2,

3,

4,

5} , Rui-Ying Bao _{1,

2,

3,

4,

5} , Zheng-Ying Liu _{1,

2,

3,

4,

5} , Ming-Bo Yang _{1,

2,

3,

4,

5} , Wei Yang _{1,

2,

3,

4,

5}

Affiliation

An ice-templating self-assembly strategy and a vacuum impregnation method were used to fabricate polyethylene glycol (PEG)/hierarchical porous scaffold composite phase change materials (PCMs). Hierarchically interconnected porous scaffolds of boron nitride (BN), with the aid of a small amount of graphene oxide (GO), endow the composite PCMs with high thermal conductivity, excellent shape-stability and efficient solar-to-electric energy conversion. The formation of a three-dimensional (3D) thermally conductive pathway in the composites contributes to improving the thermal conductivity up to 2.36 W m⁻¹ K⁻¹ at a relatively low content of BN (ca. 23 wt%). This work provides a route for thermally conductive and shape-stabilized composite PCMs used as energy storage materials.

中文翻译：

分层互连的多孔支架，用于相变材料，具有改善的导热性和高效的太阳能到电能的转换

采用冰模板自组装策略和真空浸渍法制备聚乙二醇（PEG）/多级多孔支架复合相变材料（PCM）。借助少量的氧化石墨烯（GO），氮化硼（BN）的分层互连多孔支架赋予复合材料PCM高导热率，出色的形状稳定性和有效的太阳能转化为电能的能力。复合材料中三维（3D）导热路径的形成有助于在BN含量相对较低的情况下将导热率提高至2.36 W m ^-1 K ^-1（ca.23重量％）。这项工作为用作储能材料的导热且形状稳定的复合PCM提供了一条途径。

更新日期：2017-11-23

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