Novel Latent Heat Storage Systems Based on Liquid Metal Matrices with Suspended Phase Change Material Microparticles
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초록
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Phase change materials (PCMs) are considered useful tools for efficient thermal management and thermal energy utilization in various fields. In this study, a colloidal PCM-in-liquid metal (LM) system is demonstrated as a novel platform composite with excellent latent heat storage capability, high thermal and electrical conductivities, and unique viscoelastic properties. In the proposed formulation, eutectic Ga−In is utilized as a high-thermal-conductivity and high-fluidity liquid matrix in which paraffinic PCM microparticles are suspended as fillers. The composite shows unique trade-off effects among various properties. A Joule heating device incorporating the composite exhibits improved electrothermal performance owing to the synergy between the high electrical conductivity and latent heat storage capability of the composite. The proposed platform may be exploited for the high-performance form-factor-free latent heat storage systems for various potential applications.