Inorganic salts are typically used phase change materials for high temperature thermal energy storage. Leakage and corrosion of phase change materials can be addressed by microencapsulation methods. However, microencapsulation of ethanol-soluble inorganic salts has not been reported. In this study, lithium nitrate (LiNO₃) as a model ethanol-soluble inorganic salt was microencapsulated in silica (SiO₂) by a novel method. Experimental results show that LiNO₃ was physically encapsulated by SiO₂, confirming the formation of the microcomposites. The crystal structure of LiNO₃ was not changed during the microencapsulation process. The onset melting temperature and the melting enthalpy of the microcomposites stabilized at 250.9 °C and 265.2 kJ/kg after thermal cycles, demonstrating the effectiveness of the proposed method.

无机盐通常是用于高温热能储存的相变材料。相变材料的泄漏和腐蚀可以通过微囊化方法解决。然而，乙醇可溶性无机盐的微胶囊化尚未见报道。在这项研究中，硝酸锂 (LiNO ₃ ) 作为一种模型乙醇溶性无机盐，通过一种新方法微囊化在二氧化硅 (SiO ₂ ) 中。实验结果表明，LiNO ₃被SiO ₂物理包封，证实了微复合材料的形成。LiNO ₃的晶体结构在微囊化过程中没有改变。热循环后微复合材料的起始熔融温度和熔融焓稳定在 250.9 °C 和 265.2 kJ/kg，证明了所提出方法的有效性。