Multi-source responsive and leakage-proof phase change composites based on cellulose nanofiber/sodium alginate crosslinked aerogel for thermal energy storage and management

Solar energy, as a sustainable and clean energy source, has been extensively explored for diverse applications. Organic phase change materials (PCMs) offer a promising route for solar thermal energy storage; however, issues such as leakage, low thermal conductivity, and dependence on a single energy conversion pathway have hindered their practical deployment. In this study, a magnetic porous carbon aerogel was fabricated by integrating cellulose nanofibrils, sodium alginate, and MnFe 2 O₄-modified graphene (MGO). Polyethylene glycol (PEG) was subsequently adsorbed into the aerogel framework, yielding shape-stabilized phase change composites (PMCS). Benefiting from the interconnected three-dimensional porous…

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  National Natural Science Foundation of China