Journal
ENERGY STORAGE MATERIALS
Volume 46, Issue -, Pages 100-128Publisher
ELSEVIER
DOI: 10.1016/j.ensm.2022.01.003
Keywords
Form-stable phase change material; Mineral; Encapsulation techniques; Latent heat; Thermal conductivity; Thermal energy storage
Funding
- Public Policy Research (PPR) Funding Scheme [A1.097.20A]
- National Natural Science Foundation of China [51778642]
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This review provides an overview of using minerals to encapsulate phase change materials (PCM) and analyzes the mechanisms and methods for improving the thermal performance of mineral-based functional solid-liquid phase change materials (FSPCM). It also presents the practical applications and discusses the future developments of mineral-based FSPCMs. This study is important for improving encapsulation techniques, enhancing thermal performance, and promoting practical applications.
With large latent heat and nearly constant phase change temperature, phase change material (PCM) is an ideal energy storage material, but it suffers from severe leakage problems in applications. With large specific surface area, low cost, and easy availability, minerals have been widely used to encapsulate PCM to address its leakage issue. Meanwhile, various methods have been proposed to improve the two critical thermal performances of mineral-based FSPCMs, i.e., latent heat and thermal conductivity. In this review, we summarize and analyze the fundamental principles of the PCM encapsulation techniques using minerals. Then, we review the underlying mechanisms and the methods for improving the latent heats and thermal conductivities of the mineral-based FSPCMs, respectively. Finally, we present the practical applications of the mineral-based FSPCMs and discuss their future developments. The study provides a timely review of the mineral-based FSPCMs, which help improve the encapsulation techniques, performance improvements, and practical applications. The discussion for future developments may help concentrate efforts on solving the key issues in urgent need.
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