材料科学
聚乙二醇
沸石咪唑盐骨架
PEG比率
化学工程
无定形固体
相变材料
复合数
储能
金属有机骨架
纳米技术
相变
复合材料
化学
吸附
有机化学
工程物理
物理
工程类
经济
功率(物理)
量子力学
财务
作者
Chen Dong,Ang Li,Chen Wang,Jiao Li,Hongyi Gao,Xiao Chen,Yuean Wang,Lei Li,Yu Zheng,Ge Wang
标识
DOI:10.1016/j.cej.2021.133007
摘要
Metal organic frameworks contain abundant empty space for selectively absorbing phase change materials (PCM) molecules and sometimes chemically transformed. However, the strong attractive interaction between metal organic frameworks and PCM severely blocks sufficient crystalline-amorphous state transition of PCM. Herein, we proposed an attractive interaction engineering strategy on hierarchical zeolitic imidazolate frameworks (ZIF) based phase change materials (polyethylene glycol/carbon [email protected], PEG/[email protected]) for boosting crystalline-amorphous state transition behavior and electro-/photo- driven thermal performance. Carboxyl-modified CC scaffold regulates attractive interaction between ZIF and PEG, which enhances energy storage capacity of the phase change composite. Moreover, ZIF nanoflakes deposited on the surface of CC reduce the convective heat loss at the solid–gas interface, and CC scaffold facilitates electron transportation and photon penetration, thus significantly enhancing electro- and photo- driven thermal energy storage. Furthermore, ZIF-induced chain effect between PEG and CC enhances the mechanical properties of PEG/[email protected] Notably, commercially available transition metal oxide photocatalyst can be uniformly sprayed on the surface of PEG/[email protected] through coordination chemical engineering for multi-functional phase change composite.
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