High polyethylene glycol loaded, supported and stabilized shape phase change material based on zirconium based porous metal supramolecular gel

• Published in: Journal of energy storage 2024-04, Vol.83, p.110700, Article 110700
• Main Authors: Xian, Zhong-Mei, Song, Guo-Long, Xiang, Zeng-Ni, Zhou, Jun-Jie, Gao, Fu-Hui, Mei, Jia-Xi, Zhang, Xue-Zhen, Su, Fan, Xiao, Yu-Long, Liang, Guang-Ming, Xu, Mei-Yu, Xiao, Yao
• Format: Article
• Language: English
• Subjects: Metal supramolecular gel; Phase change material; Porous
• ISSN: 2352-152X; 2352-1538
• DOI: 10.1016/j.est.2024.110700

Shape-stabilized phase change materials (PCMs) are widely used in thermal energy storage because of their shape stability, excellent PCM load capacity and energy storage performance. Herein, a straightforward strategy was adopted to design and synthesize zirconium based three-dimensional porous metal supramolecular gel (MSG) as support material in PCM. The porous support material exhibits strong hydrogen-bond interactions with polyethylene glycol (PEG) molecules, maintaining the shape stability of the PEG matrix even at 120 °C. Meantime, the load capacity and energy storage capacity of the prepared composite PCM reached an astonishing 99.2 wt% and 95.5 %, respectively. In addition, after 30 heating/cooling cycles, the phase-change composite showed high durability. Latent heat and phase transition temperature did not change significantly. •Zirconium based metal-organic gel are obtained through a rapid method at 80 °C.•The Zr-MSG was employed to support thermal stable composite.•The composite PCM exhibited the characteristics of high efficiency load and durability.