Preparation and Properties of Stearic Acid/Nanocellulose Composite Phase Change Energy Storage Materials

IF 0.7 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science Pub Date : 2024-07-01 DOI:10.5755/j02.ms.36560

Yufeng Zhao, Yang Chen

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引用次数: 0

Abstract

To solve the problems of liquid phase leakage and poor thermal conductivity of organic phase change energy storage materials, a novel composite phase change energy storage material (SA/CNF) based on stearic acid (SA) and nanocellulose (CNF) was prepared in this study and added graphene to enhance its thermal conductivity. For the prepared composite phase change materials (SFs) with different ratios, shape stability, and testing experiments showed that the maximum adsorption rate of CNF on SA reached 80 %. The properties of SA/CNF were then characterized by various instruments. The results show that SA and CNF are compounded together by physical interaction. More than 93 % of SA in the composite phase change energy storage material SA/CNF is able to store and release heat through the phase change process, and the latent heat of phase change of pure SA is 206.3 J/g, while the latent heat of phase change of the composite phase change material SA/CNF with 20 % of CNF is 156.2 J/g, and they both have good cycling stability. The addition of graphene enhances the thermal conductivity of SA/CNF to a large extent, and the thermal conductivity at a graphene ratio of 5 % is 261 % higher than that of SA/CNF without graphene. SA/CNF is an environmentally friendly energy storage material with very high application prospects.

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硬脂酸/纳米纤维素复合相变储能材料的制备与性能

为了解决有机相变储能材料液相泄漏和导热性差的问题，本研究制备了一种基于硬脂酸（SA）和纳米纤维素（CNF）的新型复合相变储能材料（SA/CNF），并添加了石墨烯以增强其导热性。对于制备的不同比例、形状稳定性的复合相变材料（SFs），测试实验表明，CNF 在 SA 上的最大吸附率达到 80%。随后，各种仪器对 SA/CNF 的性能进行了表征。结果表明，SA 和 CNF 通过物理作用复合在一起。在复合相变储能材料 SA/CNF 中，93% 以上的 SA 能够通过相变过程储存和释放热量，纯 SA 的相变潜热为 206.3 J/g，而含有 20% CNF 的复合相变材料 SA/CNF 的相变潜热为 156.2 J/g，两者都具有良好的循环稳定性。石墨烯的加入在很大程度上提高了 SA/CNF 的热导率，石墨烯比例为 5% 时的热导率比不添加石墨烯的 SA/CNF 高出 261%。SA/CNF 是一种环境友好型储能材料，具有很高的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Science 工程技术-材料科学：综合

CiteScore

1.60

自引率

44.40%

发文量

审稿时长

4-8 weeks

期刊介绍： Materials Science reports on current research into such problems as cracking, fatigue and fracture, especially in active environments as well as corrosion and anticorrosion protection of structural metallic and polymer materials, and the development of new materials.