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Volume 2, Issue 8, 18 August 2021, 100540 Phase change materials (PCMs) having a large latent heat during solid-liquid phase transition are promising for thermal energy storage applications. However, the relatively low thermal conductivity of the majority of promising PCMs (<10 W/ (m ⋅ K)) limits the power density and overall storage efficiency.
We also identify future research opportunities for PCM in thermal energy storage. Solid-liquid phase change materials (PCMs) have been studied for decades, with application to thermal management and energy storage due to the large latent heat with a relatively low temperature or volume change.
However, PCMs suffer from very low thermal conductivity and the risk of leakage when in the liquid phase. To address these issues, highly thermally conductive fillers such as carbon-based materials [8, 9, 10], metal micro/nanoparticles [11, 12] and ceramic materials [13, 14] have been incorporated into PCMs to enhance their thermal conductivity.
Thermochimica Acta 2019; 676: 94–103. 333. Li JF, Lu W, Zeng YB,. et al. Simultaneous enhancement of latent heat and thermal conductivity of docosane-based phase change material in the presence of spongy graphene.
Colloids and Surfaces A: Physicochemical and Engineering Aspects 2023; 660: 130810. 304. Yu K, Jia M, Liu Y,. et al. Binary decanoic acid/polyethylene glycol as a novel phase change material for thermal energy storage: eutectic behaviors and energy conservation evaluation. Journal of Energy Storage 2023; 68: 107663.
Zhang Q, Liu J. Sebacic acid/CNT sponge phase change material with excellent thermal conductivity and photo-thermal performance. Sol. Energy mater. Sol. Cells 2018; 179: 217. 292.
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