Lipophilic Modified Hierarchical Multiporous rGO Aerogel-Based Organic Phase Change Materials for Effective Thermal Energy Storage

• DOI: 10.1021/acsami.2c17041
• Publication Date: 2022-11-29T21:36:43Z
• Authors: Wenxing Luo; MinMing Zou; Lixiang Luo; Wenjing Chen; Xiaowu Hu; Yan Ma; Qinglin Li; Xiongxin Jiang
• Keywords: 13. Climate action; 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology; 7. Clean energy

In the field of thermal energy storage, organic phase change materials (PCMs) are widely used as functional to boost applications. However, there is often a tradeoff between constructing shape-stable composite PCMs with high enthalpy value and those low leakage rates. Here, we proposed promising scheme address this issue. A novel hydrogel consisting reduced graphene oxide (rGO) covalent framework (COF) was prepared via hydrothermal methods, rGO-COF ultralight aerogel hierarchical porous structure formed after freeze-drying. The shows excellent absorption ability affinity for solvents. It can sufficiently adsorb molten PCMs, such polyethylene glycol (PEG), synthesize leak resistance. COF grown on surface rGO has superior PEG, so an outstanding PEG loading rate up 96.1 wt %, which 1.7 % higher than that aerogel. addition, effectively reduces subcooling PEG/rGO-COF 20.3%, compared PEG/rGO. Meanwhile, exhibits extremely relative efficiency (164.6 J/g, 97.4%). This demonstrates direction highlighte preparation high-enthalpy in work.