Anisotropic Rotunda-Shaped Carboxymethylcellulose/Carbon Nanotube Aerogels Supported Phase Change Materials for Efficient Solar-Thermal Energy Conversion
© 2024 Wiley‐VCH GmbH..
For the drawbacks of phase change materials such as poor shape stability and weak solar-thermal conversion ability, a rotunda-shaped carboxymethylcellulose/carbon nanotube aerogel (CA) with three-dimensional network was constructed by freeze casting with a special mold, and then impregnated with polyethylene glycol (PEG) in this work. The PEG/CA had an enthalpy of 183.21 J/g, and a thermal conductivity of 0.324 W m-1 K-1, which was 57 % higher than the pure PEG. The ability of PEG/CA to convert solar energy to thermal energy was a positive correlation between the inclusion of CNTs and the composite material's thermal conductivity. Under simulated sunlight, its solar-thermal conversion efficiency reaches 94.41 %, and after 10 min of irradiation, the surface temperature can reach 65 °C and the internal temperature can reach 44.67 °C. This rotunda-shaped PEG/CA is promising for the efficient use of renewable solar energy due to its strong solar-thermal conversion and thermal storage capabilities.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:17 |
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| Enthalten in: |
ChemSusChem - 17(2024), 7 vom: 08. Apr., Seite e202301971 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zheng, Nannan [VerfasserIn] |
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| Links: |
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| Themen: |
Carbon nanotube |
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| Anmerkungen: |
Date Revised 09.04.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/cssc.202301971 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a For the drawbacks of phase change materials such as poor shape stability and weak solar-thermal conversion ability, a rotunda-shaped carboxymethylcellulose/carbon nanotube aerogel (CA) with three-dimensional network was constructed by freeze casting with a special mold, and then impregnated with polyethylene glycol (PEG) in this work. The PEG/CA had an enthalpy of 183.21 J/g, and a thermal conductivity of 0.324 W m-1 K-1, which was 57 % higher than the pure PEG. The ability of PEG/CA to convert solar energy to thermal energy was a positive correlation between the inclusion of CNTs and the composite material's thermal conductivity. Under simulated sunlight, its solar-thermal conversion efficiency reaches 94.41 %, and after 10 min of irradiation, the surface temperature can reach 65 °C and the internal temperature can reach 44.67 °C. This rotunda-shaped PEG/CA is promising for the efficient use of renewable solar energy due to its strong solar-thermal conversion and thermal storage capabilities | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Carbon nanotube | |
| 650 | 4 | |a Composite phase change materials | |
| 650 | 4 | |a Directional freezing | |
| 650 | 4 | |a Energy storage | |
| 650 | 4 | |a Solar-thermal energy conversion | |
| 700 | 1 | |a Pan, Hao |e verfasserin |4 aut | |
| 700 | 1 | |a Chai, Zelong |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Zhimeng |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Fengyu |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Ge |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Xiubing |e verfasserin |4 aut | |
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