Synthesis and Characterization of Paraffin/Metal Organic Gel Derived Porous Carbon/Boron Nitride Composite Phase Change Materials for Thermal Energy Storage

Abstract

New shape-stabilized paraffin/porous carbon materials derived from metal organic gel (cMOG)/boron nitride (BN) composites were prepared by the impregnation method. In the composites, paraffin was used as phase change material, while cMOG as a supporting and loading large paraffin content in the pores owing to high specific surface area and BN employed to enhance the thermal conductivity. The scanning electron microscopy images showed better filler-filler connectivity in BN/cMOG than the individual supporting materials. With the synergy of BN and cMOG, the thermal conductivity of BN/ cMOG/PCM composites exhibited up to 232.1 % of pristine PCM [a] Beijing

Leakage-proof microencapsulation of phase change materials by emulsification with acetylated cellulose nanofibrils

“…The supercooling effect can be minimized by addition of nucleation agents that can accelerate crystallization (Safari et al, 2017). On the other hand, leakage can be avoided or minimized by protecting or containing the PCM by encapsulation (Huo et al, 2018;Shchukina, Graham, Zheng, & Shchukin, 2018) or entrapping it in porous structures (Atinafu et al, 2018;Sheng, Nomura, Zhu, Habazaki, & Akiyama, 2019;Xiao & Zhang, 2013). Such strategies involve either physically adsorption (Sheng et al, 2019;Xiao & Zhang, 2013;Zhao et al, 2019), chemically bonding (Hassabo & Mohamed, 2017;Qian et al, 2019) or ionic crosslinking (Yazdani et al, 2020) between the PCM and the supporting materials.…”

Effects of biochar pyrolysis temperature on thermal properties of polyethylene glycol/biochar composites as shape-stable biocomposite phase change materials

“…But the surface of matrix leading a strong molecular interaction towards PCMs will resist liquid leakage. 44 The total proportion of micropores and mesopores of the prepared biochar has an important influence on the PEG loading capacity of the composite PCMs (see in Table 1 and Fig. 8(b) ).…”

Simple in situ synthesis of SiC nanofibers on graphite felt as a scaffold for improving performance of paraffin-based composite phase change materials

“…However, in addition to the listed advantages, good thermal conductivity is the key to achieve effective heat transfer rates for CPCMs. [19][20][21] To solve the problem of low thermal conductivity of the scaffold, researchers employed metallic foams with high thermal conductivity, such as metallic copper foams, 15,17,[22][23][24][25] or introduced llers with high thermal conductivity, such as expanded graphite, 26 graphene, 27 and one-dimensional nanobers, [28][29][30] into the scaffold, thus greatly enhancing the heat transfer capability of CPCMs. However, these metal scaffold and llers with high thermal conductivity require more time and cost in fabrication process and cost control, which severely limits the practical application of CPCMs.…”