Anisotropic porous designed polymer coatings for high-performance passive all-day radiative cooling
Summary: Porous polymer radiative cooling coatings (PPCs) have attracted attention due to their ability of drawing and radiating heat from a hot object into the outer space, without any energy consumption. However, high performance of PPCs has yet to be achieved and the large-scale production of rad...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-04-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004222003960 |
| _version_ | 1818645335903305728 |
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| author | Jiliang Zhu Zhiqiang An Anxun Zhang Yike Du Xuan Zhou Yizhao Geng Guifeng Chen |
| author_facet | Jiliang Zhu Zhiqiang An Anxun Zhang Yike Du Xuan Zhou Yizhao Geng Guifeng Chen |
| author_sort | Jiliang Zhu |
| collection | DOAJ |
| description | Summary: Porous polymer radiative cooling coatings (PPCs) have attracted attention due to their ability of drawing and radiating heat from a hot object into the outer space, without any energy consumption. However, high performance of PPCs has yet to be achieved and the large-scale production of radiative cooling technology is still facing high cost and complex manufacturing constraints. Here, we propose a simple, inexpensive, scalable approach to fabricate anisotropic (P(VdF-HFP))ap PPCs (TPCs) by dissolution and diffusion between solvent and non-solvent-induced phase separation. By adjusting the porosity, pore size, and geometry, a sub-ambient temperature drop of ∼6.3°C in daytime and 10.1°C in night-time was achieved under a solar reflectance of 0.92 and an atmospheric window emittance of 0.96. A thermoelectric generator with an output voltage of almost zero reached 7 V/m2 after coating with TPCs. This could provide a convenient, economical, and environment-friendly way for PPCs materials toward efficient cooling and power generations. |
| first_indexed | 2024-12-17T00:29:07Z |
| format | Article |
| id | doaj.art-91eaae4b180d4754805806e55b73720b |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-12-17T00:29:07Z |
| publishDate | 2022-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-91eaae4b180d4754805806e55b73720b2022-12-21T22:10:23ZengElsevieriScience2589-00422022-04-01254104126Anisotropic porous designed polymer coatings for high-performance passive all-day radiative coolingJiliang Zhu0Zhiqiang An1Anxun Zhang2Yike Du3Xuan Zhou4Yizhao Geng5Guifeng Chen6Department of Applied Physics, Hebei University of Technology, Tianjin 300401, P. R. China; Corresponding authorDepartment of Applied Physics, Hebei University of Technology, Tianjin 300401, P. R. ChinaDepartment of Applied Physics, Hebei University of Technology, Tianjin 300401, P. R. ChinaDepartment of Applied Physics, Hebei University of Technology, Tianjin 300401, P. R. ChinaDepartment of Applied Physics, Hebei University of Technology, Tianjin 300401, P. R. ChinaDepartment of Applied Physics, Hebei University of Technology, Tianjin 300401, P. R. ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, P. R. ChinaSummary: Porous polymer radiative cooling coatings (PPCs) have attracted attention due to their ability of drawing and radiating heat from a hot object into the outer space, without any energy consumption. However, high performance of PPCs has yet to be achieved and the large-scale production of radiative cooling technology is still facing high cost and complex manufacturing constraints. Here, we propose a simple, inexpensive, scalable approach to fabricate anisotropic (P(VdF-HFP))ap PPCs (TPCs) by dissolution and diffusion between solvent and non-solvent-induced phase separation. By adjusting the porosity, pore size, and geometry, a sub-ambient temperature drop of ∼6.3°C in daytime and 10.1°C in night-time was achieved under a solar reflectance of 0.92 and an atmospheric window emittance of 0.96. A thermoelectric generator with an output voltage of almost zero reached 7 V/m2 after coating with TPCs. This could provide a convenient, economical, and environment-friendly way for PPCs materials toward efficient cooling and power generations.http://www.sciencedirect.com/science/article/pii/S2589004222003960CoatingsEnergy managementEnergy materialsPolymers |
| spellingShingle | Jiliang Zhu Zhiqiang An Anxun Zhang Yike Du Xuan Zhou Yizhao Geng Guifeng Chen Anisotropic porous designed polymer coatings for high-performance passive all-day radiative cooling iScience Coatings Energy management Energy materials Polymers |
| title | Anisotropic porous designed polymer coatings for high-performance passive all-day radiative cooling |
| title_full | Anisotropic porous designed polymer coatings for high-performance passive all-day radiative cooling |
| title_fullStr | Anisotropic porous designed polymer coatings for high-performance passive all-day radiative cooling |
| title_full_unstemmed | Anisotropic porous designed polymer coatings for high-performance passive all-day radiative cooling |
| title_short | Anisotropic porous designed polymer coatings for high-performance passive all-day radiative cooling |
| title_sort | anisotropic porous designed polymer coatings for high performance passive all day radiative cooling |
| topic | Coatings Energy management Energy materials Polymers |
| url | http://www.sciencedirect.com/science/article/pii/S2589004222003960 |
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