Multi-element phase change material as well as preparation method and application thereof

The invention provides a multi-element phase change material as well as a preparation method and application thereof. The multi-element phase change material comprises n-capric acid, n-caprylic acid, n-tetradecane and nano-graphite. According to the technical scheme provided by the invention, the multi-element phase change material is prepared by mixing the n-capric acid, the n-caprylic acid, the n-tetradecane and the nano-graphite, so that the phase change temperature of the multi-element phase change material is reduced, the supercooling degree of the multi-element phase change material is reduced, the phase change latent heat of the multi-element phase change material is improved, the cycle stability of the multi-element phase change material is improved, and the heat-conducting property of the phase change material is improved. 本发明提出一种多元相变材料及其制备方法和应用，所述多元相变材料包括正癸酸、正辛酸、正十四烷及纳米石墨。本发明提供的技术方案中，通过混合正癸酸、正辛酸、正十四烷及纳米石墨，制得多元相变材料，从而降低多元相变材料的相变温度，降低其过冷度，提高其相变潜热，并提高其循环稳定性，改善相变材料的导热性能。