Highly thermally conductive composite phase-change materials doped with two-dimensional heterogeneous nanohybrids for photo/electro-thermal energy storage. (January 2023)

• Record Type: Journal Article
• Authors: Pan, Changyu; He, Ping; Chen, Naichao; Wu, Jiang; Shi, Enqi; Wang, Aofei; Jia, Haodong; Wei, Jie; Hu, Tianyang
• Is Part Of: Journal of energy storage. Volume 57(2023)
• Publication Date: 2023-01
• Subjects: Phase-change material -- Thermal properties -- Photo-thermal conversion -- Electro-thermal conversion; Energy storage -- Periodicals; Energy storage -- Research -- Periodicals; 621.3126
• DOI: 10.1016/j.est.2022.106225
• Languages: English
• ISSNs: 2352-152X

Abstract

Abstract: Phase-change thermal storage technology can solve the problem of mismatch between supply and demand of thermal energy. In this study, a meso-erythritol/two-dimensional heterogeneous nanohybrids/expanded graphite (mE/2DHN/EG) composite phase-change material (PCM) was prepared using hydrothermal and molding methods. The experimental results show that the mE/2DHN/EG composite PCM has excellent thermal, photo-thermal conversion, and electro-thermal conversion properties. The thermal conductivity of mE/2DHN/EG is as high as 12.36 W m −1 K −1, which is 17.31 times that of pure mE. In addition, the photo-thermal conversion efficiency of mE/2DHN/EG can reach 75.72 % under the action of 2DHN and can convert a low driving voltage (2.08 V) into medium-high temperature heat (> 130 °C) with an efficiency of 70.07 %. This study provides a cost-effective way to manage the photo/electro-thermal response of PCMs. Highlights: Study of meso-erythritol/two-dimensional heterogeneous nanohybrids/expanded graphite Thermal conductivity of mE/2DHN/EG is 17.31 times the thermal conductivity of pure mE. The photo-thermal conversion efficiency of mE/2DHN/EG can reach 75.72 %. The electro-thermal conversion efficiency of mE/2DHN/EG can reach 70.07 %. cPCM with excellent thermal and photo/electro-thermal energy storage performance