Eco-friendly and scalable radiative cooling for metal substrates with electrophoretically deposited chitosan

Jui Yung Chang; Hong Sheng Han; Chu Yang Wang; Linshuang Long; Liping Wang; Mikhail Sheremet; Igor Miroshnichenko; Yu Bin Chen

doi:10.1016/j.solmat.2020.110707

Eco-friendly and scalable radiative cooling for metal substrates with electrophoretically deposited chitosan

Jui Yung Chang, Hong Sheng Han, Chu Yang Wang, Linshuang Long, Liping Wang, Mikhail Sheremet, Igor Miroshnichenko, Yu Bin Chen

Engineering of Matter, Transport and Energy, School for (IAFSE-SEMTE)

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Radiative cooling is becoming more popular in various applications since the heat is dissipated passively with zero energy consumption. Radiative cooling for metallic substrates was developed in this study via electrophoretic deposition of a chitosan layer. The tailored optical properties, generality to different metals, and the cost-effectiveness of the employed fabrication facility are described. The deposited areas are scalable without requiring high-precision lithography, and the chitosan itself has trivial environmental impacts. The addition of the chitosan layer increased the thermal emissions of stainless steel and platinum substrates by 52.4 W/m² (approximately ninefold) and 51.5 W/m², respectively. The durability of the cooling performance was validated after sunlight exposure. The sample temperature decreased during the daytime by up to 2.4 °C under high humidity, and reached 4.4 °C in dry surroundings. The feasibility of using an ecofriendly material for scalable radiative cooling has been experimentally demonstrated.

Original language	English (US)
Article number	110707
Journal	Solar Energy Materials and Solar Cells
Volume	216
DOIs	https://doi.org/10.1016/j.solmat.2020.110707
State	Published - Oct 2020

Keywords

Chitosan
Eco-friendly
Electrophoretic deposition
Radiative cooling
Wavelength-selective emission

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

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10.1016/j.solmat.2020.110707

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title = "Eco-friendly and scalable radiative cooling for metal substrates with electrophoretically deposited chitosan",

abstract = "Radiative cooling is becoming more popular in various applications since the heat is dissipated passively with zero energy consumption. Radiative cooling for metallic substrates was developed in this study via electrophoretic deposition of a chitosan layer. The tailored optical properties, generality to different metals, and the cost-effectiveness of the employed fabrication facility are described. The deposited areas are scalable without requiring high-precision lithography, and the chitosan itself has trivial environmental impacts. The addition of the chitosan layer increased the thermal emissions of stainless steel and platinum substrates by 52.4 W/m2 (approximately ninefold) and 51.5 W/m2, respectively. The durability of the cooling performance was validated after sunlight exposure. The sample temperature decreased during the daytime by up to 2.4 °C under high humidity, and reached 4.4 °C in dry surroundings. The feasibility of using an ecofriendly material for scalable radiative cooling has been experimentally demonstrated.",

keywords = "Chitosan, Eco-friendly, Electrophoretic deposition, Radiative cooling, Wavelength-selective emission",

author = "Chang, {Jui Yung} and Han, {Hong Sheng} and Wang, {Chu Yang} and Linshuang Long and Liping Wang and Mikhail Sheremet and Igor Miroshnichenko and Chen, {Yu Bin}",

note = "Funding Information: Y.-B.C. is grateful to the support from Ministry of Science and Technology (MOST) of Taiwan under grant No. 106-2628-E-007-006-MY3, 107-2218-E-007-016, and 107-2622-E-007-014-CC2. J.-Y.C. appreciates financial support from the MOST of Taiwan grant No. 109-2636-E-009-014- and New Faculty Startup Fund at NCTU. L.L. and L.W. would like to thank the support from National Science Foundation under Grant No. CBET-1454698. Funding Information: Y.-B.C. is grateful to the support from Ministry of Science and Technology (MOST) of Taiwan under grant No. 106-2628-E-007-006-MY3 , 107-2218-E-007-016 , and 107-2622-E-007-014-CC2 . J.-Y.C. appreciates financial support from the MOST of Taiwan grant No. 109-2636-E-009-014- and New Faculty Startup Fund at NCTU . L.L. and L.W. would like to thank the support from National Science Foundation under Grant No. CBET-1454698 . Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = oct,

doi = "10.1016/j.solmat.2020.110707",

language = "English (US)",

volume = "216",

journal = "Solar Energy Materials and Solar Cells",

issn = "0927-0248",

publisher = "Elsevier",

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TY - JOUR

T1 - Eco-friendly and scalable radiative cooling for metal substrates with electrophoretically deposited chitosan

AU - Chang, Jui Yung

AU - Han, Hong Sheng

AU - Wang, Chu Yang

AU - Long, Linshuang

AU - Wang, Liping

AU - Sheremet, Mikhail

AU - Miroshnichenko, Igor

AU - Chen, Yu Bin

N1 - Funding Information: Y.-B.C. is grateful to the support from Ministry of Science and Technology (MOST) of Taiwan under grant No. 106-2628-E-007-006-MY3, 107-2218-E-007-016, and 107-2622-E-007-014-CC2. J.-Y.C. appreciates financial support from the MOST of Taiwan grant No. 109-2636-E-009-014- and New Faculty Startup Fund at NCTU. L.L. and L.W. would like to thank the support from National Science Foundation under Grant No. CBET-1454698. Funding Information: Y.-B.C. is grateful to the support from Ministry of Science and Technology (MOST) of Taiwan under grant No. 106-2628-E-007-006-MY3 , 107-2218-E-007-016 , and 107-2622-E-007-014-CC2 . J.-Y.C. appreciates financial support from the MOST of Taiwan grant No. 109-2636-E-009-014- and New Faculty Startup Fund at NCTU . L.L. and L.W. would like to thank the support from National Science Foundation under Grant No. CBET-1454698 . Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/10

Y1 - 2020/10

N2 - Radiative cooling is becoming more popular in various applications since the heat is dissipated passively with zero energy consumption. Radiative cooling for metallic substrates was developed in this study via electrophoretic deposition of a chitosan layer. The tailored optical properties, generality to different metals, and the cost-effectiveness of the employed fabrication facility are described. The deposited areas are scalable without requiring high-precision lithography, and the chitosan itself has trivial environmental impacts. The addition of the chitosan layer increased the thermal emissions of stainless steel and platinum substrates by 52.4 W/m2 (approximately ninefold) and 51.5 W/m2, respectively. The durability of the cooling performance was validated after sunlight exposure. The sample temperature decreased during the daytime by up to 2.4 °C under high humidity, and reached 4.4 °C in dry surroundings. The feasibility of using an ecofriendly material for scalable radiative cooling has been experimentally demonstrated.

AB - Radiative cooling is becoming more popular in various applications since the heat is dissipated passively with zero energy consumption. Radiative cooling for metallic substrates was developed in this study via electrophoretic deposition of a chitosan layer. The tailored optical properties, generality to different metals, and the cost-effectiveness of the employed fabrication facility are described. The deposited areas are scalable without requiring high-precision lithography, and the chitosan itself has trivial environmental impacts. The addition of the chitosan layer increased the thermal emissions of stainless steel and platinum substrates by 52.4 W/m2 (approximately ninefold) and 51.5 W/m2, respectively. The durability of the cooling performance was validated after sunlight exposure. The sample temperature decreased during the daytime by up to 2.4 °C under high humidity, and reached 4.4 °C in dry surroundings. The feasibility of using an ecofriendly material for scalable radiative cooling has been experimentally demonstrated.

KW - Chitosan

KW - Eco-friendly

KW - Electrophoretic deposition

KW - Radiative cooling

KW - Wavelength-selective emission

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U2 - 10.1016/j.solmat.2020.110707

DO - 10.1016/j.solmat.2020.110707

M3 - Article

AN - SCOPUS:85089440882

SN - 0927-0248

VL - 216

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

M1 - 110707

ER -

Eco-friendly and scalable radiative cooling for metal substrates with electrophoretically deposited chitosan

Abstract

Keywords

ASJC Scopus subject areas

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