Abstract Sepiolite (Sep) and exfoliated graphite nanoplatelets (xGnP) were applied as supporting material and thermal conductive fillers to solve the problems of possible leakage, low thermal conductivity and high supercooling of m-erythritol (ME) as a phase change material (PCM). The loading of ME in the ME/Sep form-stable PCMs could attain 56 wt% when the Sep was treated by 2.5 M HCl and heated at 800 °C for 1 h. The form-stable PCMs were basically physical mixtures though there were some interactions occurred between the hydroxyl groups of ME and Sep. The thermal stability of ME was improved after it was confined in the supporting materials. In addition, the thermal conductivity of the ME/Sep/xGnP form-stable PCM containing 56% ME and 8.0 wt% xGnP could be enhanced to 0.756 W/mK, which was 103% higher than the corresponding ME/Sep form-stable PCM. Moreover, the transient temperature response of the form-stable PCMs was greatly improved by Sep and xGnP. Furthermore, the supercooling of ME could be decreased from 80 °C for pure ME to about 30 °C in the ME/Sep/xGnP form-stable PCM containing 56% ME and 8.0 wt% xGnP. Besides, the latent heat recovery ratio of the ME/Sep/xGnP form-stable PCMs were also greatly improved.

中文翻译：

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高导热、抑制过冷的赤藓糖醇/海泡石/薄片化石墨纳米片形稳定相变材料的制备与表征

摘要 采用海泡石（Sep）和薄片化石墨纳米片（xGnP）作为支撑材料和导热填料，解决了间赤藓糖醇（ME）作为相变材料（PCM）可能泄漏、导热率低和过冷度高的问题。 . 当 Sep 用 2.5 M HCl 处理并在 800°C 下加热 1 小时时，ME/Sep 形式稳定的 PCM 中 ME 的负载量可以达到 56 wt%。尽管 ME 和 Sep 的羟基之间发生了一些相互作用，但形状稳定的 PCMs 基本上是物理混合物。ME 被限制在支撑材料中后，其热稳定性得到提高。此外，含有 56% ME 和 8.0 wt% xGnP 的 ME/Sep/xGnP 形式稳定 PCM 的热导率可以提高到 0.756 W/mK，这比相应的 ME/Sep 形式稳定 PCM 高 103%。此外，Sep 和 xGnP 极大地改善了形状稳定 PCM 的瞬态温度响应。此外，在含有 56% ME 和 8.0 wt% xGnP 的 ME/Sep/xGnP 形式稳定的 PCM 中，ME 的过冷度可以从纯 ME 的 80°C 降低到约 30°C。此外，ME/Sep/xGnP 形式稳定的 PCM 的潜热回收率也大大提高。