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Enhancement of Thermal Performance of Composite Phase Change Materials by Graphite In Situ Modified Al2O3 Porous Support AITranslate

Shuang Song; Siyi Zhao; Xunrui Wang; Qianwei Liang; Jinhong Li; Xiaoguang Zhang; Yali Li;
China University of Geosciences; China University of Geosciences; China University of Geosciences; Beijing University of Technology; China University of Geosciences; Beijing University of Technology;Institute of Analysis and Testing
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Publisher: ACS
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Abstract AITranslate

Three-dimensionally connected, pore-adjustable, high-porosity Al2O3 foam (AF) and graphite in situ modified Al2O3 foams (GAFs) were prepared by using the particle-stabilized emulsion as a template. A graphite layer was coated on the surface of Al2O3 particles by using sucrose as a carbon resource, preventing PEG leakage and improving the thermal conductivity. After encapsulating PEG with AF and GAF, we obtained a series of stabilized composite phase change materials (sPCMs). The melting enthalpy of PGAF can reach up to 152.4, which is 27.2% higher than that of PAF. The thermal conductivity of PGAF 30 is 0.79 W/(m K), which is 1.47 times that of PEG, and the light-to-heat conversion efficiency can reach 81.31%. The prepared sPCM has broad application prospects in solar energy utilization, waste heat recovery, building energy saving, and power peak regulation.

KeyWords AITranslate

graphite Al2O3 foam threedimensional poly(ethylene glycol) phase change materials thermal conductivity
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Basic Information:

DOI：https://doi.org/10.1021/acsapm.3c01261

Chinese Library Classification Number:

Citation Information:

Three-dimensionally connected, pore-adjustable, high-porosity Al2O3 foam (AF) and graphite in situ modified Al2O3 foams (GAFs) were prepared by using the particle-stabilized emulsion as a template. A graphite layer was coated on the surface of Al2O3 particles by using sucrose as a carbon resource, preventing PEG leakage and improving the thermal conductivity. After encapsulating PEG with AF and GAF, we obtained a series of stabilized composite phase change materials (sPCMs). The melting enthalpy of PGAF can reach up to 152.4, which is 27.2% higher than that of PAF. The thermal conductivity of PGAF 30 is 0.79 W/(m K), which is 1.47 times that of PEG, and the light-to-heat conversion efficiency can reach 81.31%. The prepared sPCM has broad application prospects in solar energy utilization, waste heat recovery, building energy saving, and power peak regulation.

quote

GB/T 7714-2015 [1] Shuang Song, Siyi Zhao, Xunrui Wang, et al. ACS Applied Polymer Materials, 2023(5). DOI:10.1021/acsapm.3c01261.
MLA [1] Shuang Song, et al., ACS Applied Polymer Materials, no. 5, 2023, https://doi.org/10.1021/acsapm.3c01261.
APA [1] Shuang Song, Siyi Zhao, Xunrui Wang, Qianwei Liang, Jinhong Li, Xiaoguang Zhang, & Yali Li. (2023). ACS Applied Polymer Materials(5). https://doi.org/10.1021/acsapm.3c01261
IEEE [1] Shuang Song, Siyi Zhao, Xunrui Wang, Qianwei Liang, Jinhong Li, Xiaoguang Zhang, and Yali Li, ACS Applied Polymer Materials, no. 5, 2023, doi: 10.1021/acsapm.3c01261. keywords: {graphite;Al2O3 foam;threedimensional;poly(ethylene glycol);phase change materials;thermal conductivity}