Preparation and characterization of KF-KCl/SiO2 composite materials

doi:10.3969/j.issn.2095-4239.2015.06.009

Abstract

Abstract: A KF-KCl based composite phase change material has been successfully fabricated using power sintering method with SiO₂ as matrix, vinyl alcohol as binder and B₂O₃ as sintering additive. The formulation and the optimal sintering temperature are obtained through experiments. XRD analyses indicate a good chemical compatibility of the system. TG-DSC analyses show an endothermic peak at 591.7 ℃ with a latent heat of 157.4 J^-1·g. The results demonstrate that the composite PCM has a high energy density with potential for high temperature thermal storage without using a container.

Key words: phase change material, inorganic salt, ceramic, high temperature thermal storage

CLC Number:

TK02

FU Hang, CHENG Xiaomin, ZHU Jiaoqun, LI Yuanyuan, ZHOU Weibing. Preparation and characterization of KF-KCl/SiO₂ composite materials[J]. Energy Storage Science and Technology, 2015, 4(6): 616-621.

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Preparation and characterization of KF-KCl/SiO₂ composite materials

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