Updated results on the integration of metal-organic framework with functional materials toward n-alkane for latent heat retention and reliability

Dimberu G Atinafu; Beom Yeol Yun; Sungwoong Yang; Yujin Kang; Sumin Kim

doi:10.1016/j.jhazmat.2021.127147

Updated results on the integration of metal-organic framework with functional materials toward n-alkane for latent heat retention and reliability

J Hazard Mater. 2022 Feb 5;423(Pt B):127147. doi: 10.1016/j.jhazmat.2021.127147. Epub 2021 Sep 10.

Authors

Dimberu G Atinafu¹, Beom Yeol Yun¹, Sungwoong Yang¹, Yujin Kang¹, Sumin Kim²

Affiliations

¹ Department of Architecture and Architectural Engineering, Yonsei University, Seoul 03722, Republic of Korea.
² Department of Architecture and Architectural Engineering, Yonsei University, Seoul 03722, Republic of Korea. Electronic address: kimsumin@yonsei.ac.kr.

PMID: 34560485
DOI: 10.1016/j.jhazmat.2021.127147

Abstract

Phase change composites are in high demand in thermal management systems. Various supporting materials, including nanocomposites, have been employed to develop shape-stable phase change materials (PCMs). As the reliability of most composite materials has mostly been studied right after the preparation with specific thermal cycling measurements, it is difficult to analyze the long-term leakage-resistance capability and energy retention capacity. Additionally, achieving multifunctional phase change composites is a significant challenge for single supporting materials. Herein, we provide a follow-up report on the thermal performance of hybrid material-supported n-alkane after a storage time of one year and 50 heating/cooling cycles. The interconnected hybrid material composed of a metal-organic framework (MOF) and graphite improved the shape/thermal stability of tetradecane (TD). The as-synthesized MOF/graphite/TD composites exhibited a high latent heat retention capacity of 84.2%, low leakage rate of 1.25%, and high PCM loading capacity, making them suitable for thermal management applications, such as industrial waste heat recovery systems. Furthermore, the intermolecular interactions and capillary forces between the hybrid materials and TD provided high stability and compatibility. Therefore, the as-prepared hybrid material fabricated in this study can be important in the development of multidirectional composite PCMs with comprehensive thermal characteristics.

Keywords: Durability; Hybrid materials; Latent heat retention; Leakage rate; Tetradecane.