Resource utilization of solid waste in the field of phase change thermal energy storage

Phase change energy storage technology (PCEST) can improve energy utilization efficiency and solve the problem of fossil energy depletion. Phase change materials (PCMs) are a critical factor in the development of PCEST. Solid waste is a dislocation resource, and its comprehensive utilization has always attracted much attention. Solid wastes and their products have large specific areas and abundant pore structures, and they can encapsulate PCMs to prepare form-stable PCMs (FS-PCMs) to overcome the problem of PCMs leakage during use. This article reviews the research on solid waste base FS-PCMs, which mainly includes preparation strategies, application solutions, and future research recommendations. These will provide references for related research and applications and promote the study of solid waste base FS-PCMs.