棕榈酸/膨胀石墨/CuS复合相变材料实现高效储热和光热转换,Dalton Transactions

当前位置： X-MOL 学术 › Dalton Trans. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

棕榈酸/膨胀石墨/CuS复合相变材料实现高效储热和光热转换
Dalton Transactions ( IF 3.5 ) Pub Date : 2023-06-23 , DOI: 10.1039/d3dt01539d
Ying-Jie Huo _{1,

2} , Ting Yan _{1,

2} , Zhi-Hui Li _{1,

2} , Shu-Yao Li _{1,

2} , Wei-Guo Pan _{1,

2}

Affiliation

本研究制备了具有特殊形貌的纳米CuS（EG/CuS）支撑材料的膨胀石墨（EG），其中EG/CuS填充了不同比例的棕榈酸（PA）。最终合成了具有光热转换性能的PA/EG/CuS复合相变蓄热材料。通过实验的表征和分析证明了 PA/EG/CuS 优异的化学和热稳定性。EG作为多层结构材料，为PA和纳米CuS提供了丰富的结合位点，构建了丰富的导热路径，有效提高了PA/EG/CuS的导热性能。值得注意的是PA/EG/CuS的最大导热系数达到0.372 W m ⁻¹ K ⁻¹最大相变蓄热容量达到260.4 kJ kg ^-1，证明了PA/EG/CuS优异的蓄热性能。此外，PA/EG/CuS表现出优异的光热转换性能，实验结果表明PA/EG/CuS的最佳光热转换效率达到81.4%。本研究开发的PA/EG/CuS为制备用于太阳能利用和储能的优异导电性和低泄漏复合相变材料提供了一种有前景的方法。

"点击查看英文标题和摘要"

Palmitic acid/expanded graphite/CuS composite phase change materials toward efficient thermal storage and photothermal conversion

In this study, an expanded graphite (EG) with nano-CuS (EG/CuS) support material with a special morphology was prepared, with EG/CuS filled with different ratios of palmitic acid (PA). Finally, a PA/EG/CuS composite phase change thermal storage material with photothermal conversion performance was synthesized. The superb chemical and thermal stability of PA/EG/CuS was demonstrated by characterization and analysis of the experiments. EG, a multi-layer structured material, provides rich binding sites for PA and nano-CuS and constructs rich thermal conductivity paths, which effectively improves the thermal conductivity of PA/EG/CuS. It is noted that the maximum thermal conductivity of PA/EG/CuS reached 0.372 W m⁻¹ K⁻¹ and the maximum phase change thermal storage capacity reached 260.4 kJ kg⁻¹, which proved the excellent thermal storage properties of PA/EG/CuS. In addition, PA/EG/CuS exhibits excellent photothermal conversion performance, and the experimental results demonstrated that the best photothermal conversion efficiency of PA/EG/CuS reached 81.4%. The PA/EG/CuS developed in this study provides a promising method for fabricating excellent conductive and low leakage composite phase change materials for solar energy utilization and energy storage.

更新日期：2023-06-23

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南