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Jung Y, Jeong S, Ahn J, Lee J, Ko SH. High Efficiency Breathable Thermoelectric Skin Using Multimode Radiative Cooling/Solar Heating Assisted Large Thermal Gradient. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304338. [PMID: 37649174 DOI: 10.1002/smll.202304338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/27/2023] [Indexed: 09/01/2023]
Abstract
This study proposes a Janus structure-based stretchable and breathable thermoelectric skin with radiative cooling (RC) and solar heating (SH) functionalities for sustainable energy harvesting. The challenge of the wearable thermoelectric generator arises from the small temperature difference. Thus, this dual-sided structure maximizes the thermal gradient between the body and the surrounding environment, unlike the previous works that rather concentrate on the efficiency of the thermoelectric generator itself. The Janus structure allows the device to switch to the other mode, optimizing electricity generation from a given weather condition. For these functionalities, for the first time, boron nitride-polydimethylsiloxane (BP) and graphene nanoplatelet-polydimethylsiloxane (GP) nanofiber (NF) are developed as substrates. The BP NF generates the RC capability of ΔTcooling = 4 °C, and the high solar absorbance of the GP NF enables it to be photothermally heated. The flip-overable thermoelectric skin (FoTES) achieves a maximum power output (Pmax ) of 5.73 µW cm-2 in RC mode, surpassing SH mode by 5.55 µW cm-2 in the morning. In the afternoon, it generates a Pmax of 18.59 µW cm-2 in SH mode, outperforming RC mode by 15.56 µW cm-2 . This work contributes to the advancement of wearable electronics, offering a sustainable power source in a wearable form.
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Affiliation(s)
- Yeongju Jung
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Seongmin Jeong
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jiyong Ahn
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jinwoo Lee
- Department of Mechanical, Robotics, and Energy Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul, 04620, Republic of Korea
| | - Seung Hwan Ko
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Institute of Advanced Machinery and Design (SNU-IAMD), Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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Altamimi MMS, Saeed U, Al-Turaif H. BaSO 4/TiO 2 Microparticle Embedded in Polyvinylidene Fluoride-Co-Hexafluoropropylene/Polytetrafluoroethylene Polymer Film for Daytime Radiative Cooling. Polymers (Basel) 2023; 15:3876. [PMID: 37835925 PMCID: PMC10574871 DOI: 10.3390/polym15193876] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/16/2023] [Accepted: 09/17/2023] [Indexed: 10/15/2023] Open
Abstract
Radiative cooling is a new large-scale cooling technology with the promise of lowering costs and decreasing global warning. Currently, daytime radiative cooling is achieved via the application of reflective metal layers and complicated multilayer structures, limiting its application on a massive scale. In our research, we explored and tested the daytime subambient cooling effect with the help of single-layer films consisting of BaSO4, TiO2, and BaSO4/TiO2 microparticles embedded in PVDF/PTFE polymers. The film, consisting of BaSO4/TiO2 microparticles, offers a low solar absorbance and high atmospheric window emissivity. The solar reflectance is enhanced by micropores in the PVDF/PTFE polymers, without any significant influence on the thermal emissivity. The BaSO4/TiO2/PVDF/PTFE microparticle film attains 0.97 solar reflectance and 0.95 high sky-window emissivity when the broadly distributed pore size reaches 180 nm. Our field test demonstrated that the single-layer BaSO4/TiO2/PVDF/PTFE microparticle film achieved a temperature 5.2 °C below the ambient temperature and accomplished a cooling power of 74 W/m2. Also, the results show that, when the humidity rises from 33% to 38% at 12:30 pm, it hinders the cooling of the body surface and lowers the cooling effect to 8%.
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Affiliation(s)
| | - Usman Saeed
- Chemical and Materials Engineering Department, Faculty of Engineering, King Abdulaziz University, Jeddah P.O. Box 80200, Saudi Arabia; (M.M.S.A.); (H.A.-T.)
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Lee M, Kim G, Jung Y, Pyun KR, Lee J, Kim BW, Ko SH. Photonic structures in radiative cooling. LIGHT, SCIENCE & APPLICATIONS 2023; 12:134. [PMID: 37264035 DOI: 10.1038/s41377-023-01119-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 02/03/2023] [Accepted: 02/27/2023] [Indexed: 06/03/2023]
Abstract
Radiative cooling is a passive cooling technology without any energy consumption, compared to conventional cooling technologies that require power sources and dump waste heat into the surroundings. For decades, many radiative cooling studies have been introduced but its applications are mostly restricted to nighttime use only. Recently, the emergence of photonic technologies to achieves daytime radiative cooling overcome the performance limitations. For example, broadband and selective emissions in mid-IR and high reflectance in the solar spectral range have already been demonstrated. This review article discusses the fundamentals of thermodynamic heat transfer that motivates radiative cooling. Several photonic structures such as multilayer, periodical, random; derived from nature, and associated design procedures were thoroughly discussed. Photonic integration with new functionality significantly enhances the efficiency of radiative cooling technologies such as colored, transparent, and switchable radiative cooling applications has been developed. The commercial applications such as reducing cooling loads in vehicles, increasing the power generation of solar cells, generating electricity, saving water, and personal thermal regulation are also summarized. Lastly, perspectives on radiative cooling and emerging issues with potential solution strategies are discussed.
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Affiliation(s)
- Minjae Lee
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
- Electronic Device Research Team, Hyundai Motor Group, 37, Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do, 16082, South Korea
| | - Gwansik Kim
- E-drive Materials Research Team, Hyundai Motor Group, 37, Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do, 16082, South Korea
| | - Yeongju Jung
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Kyung Rok Pyun
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Jinwoo Lee
- Department of Mechanical Robotics, and Energy Engineering, Dongguk University, 30 pildong-ro 1-gil, Jung-gu, Seoul, 04620, South Korea
| | - Byung-Wook Kim
- E-drive Materials Research Team, Hyundai Motor Group, 37, Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do, 16082, South Korea.
- Department of Civil Engineering and Engineering Mechanics, Columbia University, New York, NY, 10027, USA.
| | - Seung Hwan Ko
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.
- Institute of Advanced Machinery and Design (SNU-IAMD)/Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.
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Zhang D, Zhang H, Xu Z, Zhao Y. Recent Advances in Electrospun Membranes for Radiative Cooling. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16103677. [PMID: 37241303 DOI: 10.3390/ma16103677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023]
Abstract
Radiative cooling is an approach that maximizes the thermal emission through the atmospheric window in order to dissipate heat, while minimizing the absorption of incoming atmospheric radiation, to realize a net cooling effect without consuming energy. Electrospun membranes are made of ultra-thin fibers with high porosity and surface area, which makes them suitable for radiative cooling applications. Many studies have investigated the use of electrospun membranes for radiative cooling, but a comprehensive review that summarizes the research progress in this area is still lacking. In this review, we first summarize the basic principles of radiative cooling and its significance in achieving sustainable cooling. We then introduce the concept of radiative cooling of electrospun membranes and discuss the selection criteria for materials. Furthermore, we examine recent advancements in the structural design of electrospun membranes for improved cooling performance, including optimization of geometric parameters, incorporation of highly reflective nanoparticles, and designing multilayer structure. Additionally, we discuss dual-mode temperature regulation, which aims to adapt to a wider range of temperature conditions. Finally, we provide perspectives for the development of electrospun membranes for efficient radiative cooling. This review will provide a valuable resource for researchers working in the field of radiative cooling, as well as for engineers and designers interested in commercializing and developing new applications for these materials.
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Affiliation(s)
- Dongxue Zhang
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Haiyan Zhang
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Zhiguang Xu
- China-Australia Institute for Advanced Materials and Manufacturing, Jiaxing University, Jiaxing 314001, China
| | - Yan Zhao
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
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Woo HY, Choi Y, Chung H, Lee DW, Paik T. Colloidal inorganic nano- and microparticles for passive daytime radiative cooling. NANO CONVERGENCE 2023; 10:17. [PMID: 37071232 PMCID: PMC10113424 DOI: 10.1186/s40580-023-00365-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
Compared to traditional cooling systems, radiative cooling (RC) is a promising cooling strategy in terms of reducing energy consumption enormously and avoiding severe environmental issues. Radiative cooling materials (RCMs) reduce the temperature of objects without using an external energy supply by dissipating thermal energy via infrared (IR) radiation into the cold outer space through the atmospheric window. Therefore, RC has a great potential for various applications, such as energy-saving buildings, vehicles, water harvesting, solar cells, and personal thermal management. Herein, we review the recent progress in the applications of inorganic nanoparticles (NPs) and microparticles (MPs) as RCMs and provide insights for further development of RC technology. Particle-based RCMs have tremendous potential owing to the ease of engineering their optical and physical properties, as well as processibility for facile, inexpensive, and large area deposition. The optical and physical properties of inorganic NPs and MPs can be tuned easily by changing their size, shape, composition, and crystals structures. This feature allows particle-based RCMs to fulfill requirements pertaining to passive daytime radiative cooling (PDRC), which requires high reflectivity in the solar spectrum and high emissivity within the atmospheric window. By adjusting the structures and compositions of colloidal inorganic particles, they can be utilized to design a thermal radiator with a selective emission spectrum at wavelengths of 8-13 μm, which is preferable for PDRC. In addition, colloidal particles can exhibit high reflectivity in the solar spectrum through Mie-scattering, which can be further engineered by modifying the compositions and structures of colloidal particles. Recent advances in PDRC that utilize inorganic NPs and MPs are summarized and discussed together with various materials, structural designs, and optical properties. Subsequently, we discuss the integration of functional NPs to achieve functional RCMs. We describe various approaches to the design of colored RCMs including structural colors, plasmonics, and luminescent wavelength conversion. In addition, we further describe experimental approaches to realize self-adaptive RC by incorporating phase-change materials and to fabricate multifunctional RC devices by using a combination of functional NPs and MPs.
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Affiliation(s)
- Ho Young Woo
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Yoonjoo Choi
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Hyesun Chung
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Da Won Lee
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Taejong Paik
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea.
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6
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Li M, Yan Z, Fan D. Flexible Radiative Cooling Textiles Based on Composite Nanoporous Fibers for Personal Thermal Management. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17848-17857. [PMID: 36977290 DOI: 10.1021/acsami.3c00252] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Passive radiative cooling textiles can reflect sunlight and dissipate heat directly to the outside space without any energy input. However, radiative cooling textiles with high performance, large scalability, cost effectiveness, and high biodegradability are still uncommon. Herein, we exploit a porous fiber-based radiative cooling textile (PRCT) via nonsolvent-induced phase separation and scalable roll-to-roll electrospinning technology. Nanopores are introduced into single fibers, and the pore size can be accurately optimized by managing the relative humidity of the spinning environment. The anti-ultraviolet radiation and superhydrophobicity of textiles were improved by the introduction of core-shell silica microspheres. An optimized PRCT yields a strong solar reflectivity of 98.8% and atmospheric window emissivity of 97%, which results in a sub-ambient temperature drop of 4.5 °C, with the solar intensity over 960 W·m-2 and 5.5 °C at night. For personal thermal management, it is demonstrated that the PRCT can obtain a temperature drop of 7.1 °C compared to the bare skin under direct sunlight. Given the excellent optical and cooling properties, flexibility, and self-cleaning property, PRCT was demonstrated to be a potential candidate for commercial applications in multifarious complex scenarios to afford a style for global decarbonization.
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Affiliation(s)
- Mingzhang Li
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Zhen Yan
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Desong Fan
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
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7
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Liu X, Li Y, Pan Y, Zhou Z, Zhai Z, Liu C, Shen C. A Shish-Kebab Superstructure Film for Personal Radiative Cooling. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17188-17194. [PMID: 36946512 DOI: 10.1021/acsami.3c00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Due to global warming and the energy crisis, incorporating passive radiative cooling into personal thermal management has attracted extensive attention. However, developing a wearable textile that reflects incoming sunlight and allows mid-infrared radiation transmission is still a tough challenge. Herein, a shish-kebab superstructure film was produced via a flow-induced crystallization strategy for personal radiative cooling. The resulting film endowed a high infrared transmittance (87%) and improved sunlight reflectivity (83%). A device was developed to simulate the human body skin, and the temperatures of the shish-kebab film were 2.5 and 2.6 °C lower than that of traditional textile in outdoor and indoor tests, respectively. In order to make the shish-kebab film more wearable, a series of modifications were then carried out. This study demonstrates the substantial potential to personal thermal management textiles.
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Affiliation(s)
- Xianhu Liu
- State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, Henan 450002, China
| | - Yingnuo Li
- National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, Henan 450002, China
| | - Yamin Pan
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Zhenyu Zhou
- Zhongkexin Engineering Consulting (Beijjing) Co., Ltd., Beijing 100039, China
| | - Zhanyu Zhai
- College of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Chuntai Liu
- State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, Henan 450002, China
| | - Changyu Shen
- State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, Henan 450002, China
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Altamirano MG, Abebe MG, Hergué N, Lejeune J, Cayla A, Campagne C, Maes B, Devaux E, Odent J, Raquez JM. Environmentally responsive hydrogel composites for dynamic body thermoregulation. SOFT MATTER 2023; 19:2360-2369. [PMID: 36880670 DOI: 10.1039/d2sm01548j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Hydrogel composites exhibiting dynamic thermo-hydro responsive modulation of infrared radiation (IR) in the 5-15 μm range are designed for personalized body thermoregulation. Fabrication of the proposed system relies on the periodic arrangement of submicron-sized spherical fine silica (SiO2) particles within poly(N-isopropylacrylamide) (PNIPAM)-based hydrogels. The dependence of the SiO2 particles content on the IR reflection, followed by its modulation in response to any immediate environmental changes are thereby investigated. The addition of 20 wt% of SiO2 allowed the hydrogel composites to reflect 20% of the IR emitted by the human body at constant temperature (i.e. T = 20 °C) and relative humidity (i.e. RH = 0%). According to Bragg's law, we found that the smaller the distance between the SiO2 particles, the higher the IR reflection. The IR reflection further increased to a maximum of 42% when the resulting hydrogel composites are subjected to changes in relative humidity (i.e. RH = 60%) and temperature (i.e. T = 35 °C). Thermography is used to map the IR radiation emitted from the hydrogel composites when placed on the skin of the human body, demonstrating that the composite is actually reflecting IR. The latter results are supported by theoretical models that define the IR reflection profile of the resulting hydrogel composites with respect to the silica content, relative humidity and temperature.
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Affiliation(s)
- M Garzón Altamirano
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS), Mons, Belgium.
- University of Lille, ENSAIT, ULR 2461 - GEMTEX - Génie et Matériaux Textiles, F-59000 Lille, France
| | - M G Abebe
- Micro- and Nanophotonic Materials Group, Research Institute for Materials Science and Engineering, University of Mons, 20 Place du Parc, B-7000, Mons, Belgium
| | - N Hergué
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS), Mons, Belgium.
| | - J Lejeune
- University of Lille, ENSAIT, ULR 2461 - GEMTEX - Génie et Matériaux Textiles, F-59000 Lille, France
| | - A Cayla
- University of Lille, ENSAIT, ULR 2461 - GEMTEX - Génie et Matériaux Textiles, F-59000 Lille, France
| | - C Campagne
- University of Lille, ENSAIT, ULR 2461 - GEMTEX - Génie et Matériaux Textiles, F-59000 Lille, France
| | - B Maes
- Micro- and Nanophotonic Materials Group, Research Institute for Materials Science and Engineering, University of Mons, 20 Place du Parc, B-7000, Mons, Belgium
| | - E Devaux
- University of Lille, ENSAIT, ULR 2461 - GEMTEX - Génie et Matériaux Textiles, F-59000 Lille, France
| | - J Odent
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS), Mons, Belgium.
| | - J M Raquez
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS), Mons, Belgium.
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Yang P, He J, Ju Y, Zhang Q, Wu Y, Xia Z, Chen L, Tang S. Dual-Mode Integrated Janus Films with Highly Efficient NaH 2 PO 2 -Enhanced Infrared Radiative Cooling and Solar Heating for Year-Round Thermal Management. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2206176. [PMID: 36638249 PMCID: PMC9982563 DOI: 10.1002/advs.202206176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/12/2022] [Indexed: 06/17/2023]
Abstract
The currently available materials cannot meet the requirements of human thermal comfort against the hot and cold seasonal temperature fluctuations. In this study, a dual-mode Janus film with a bonded interface to gain dual-mode functions of both highly efficient radiative cooling and solar heating for year-round thermal management is designed and prepared. The cooling side is achieved by embedding NaH2 PO2 particles with high infrared radiation (IR) emittance into a porous polymethyl methacrylate (PMMA) film during pore formation process, which is reported for the first time to the knowledge. A synergistic enhancement of NaH2 PO2 and 3D porous structure leads to efficient radiant cooling with high solar reflectance (R̅solar ≈ 92.6%) and high IR emittance (ε̅IR ≈ 97.2%), especially the ε̅IR value is much greater than that of the reported best porous polymer films. In outdoor environments under 750 mW cm-2 solar radiation, the dual-mode Janus film shows subambient cooling temperature of ≈8.8 °C and heating temperature reaching ≈39.3 °C, indicating excellent thermal management capacity. A wide temperature range is obtained only by flipping the dual-mode Janus film for thermal management. This work provides an advanced zero-energy-consumption human thermal management technique based on the high-performance dual-mode integrated Janus film material.
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Affiliation(s)
- Peng Yang
- School of Physics and Wuhan National High Magnetic Field CenterHuazhong University of Science and TechnologyWuhan430074P. R. China
- National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesNanjing UniversityNanjing210093P. R. China
- Haian Institute of High‐Tech ResearchNanjing UniversityJiangsu226600P. R. China
| | - Jiajun He
- National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesNanjing UniversityNanjing210093P. R. China
| | - Yanshan Ju
- National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesNanjing UniversityNanjing210093P. R. China
| | - Qingyuan Zhang
- National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesNanjing UniversityNanjing210093P. R. China
| | - Yipeng Wu
- National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesNanjing UniversityNanjing210093P. R. China
| | - Zhengcai Xia
- School of Physics and Wuhan National High Magnetic Field CenterHuazhong University of Science and TechnologyWuhan430074P. R. China
| | - Liang Chen
- School of Physics and Wuhan National High Magnetic Field CenterHuazhong University of Science and TechnologyWuhan430074P. R. China
| | - Shaochun Tang
- National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesNanjing UniversityNanjing210093P. R. China
- Haian Institute of High‐Tech ResearchNanjing UniversityJiangsu226600P. R. China
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10
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Cai X, Gao L, Wang J, Li D. MOF-Integrated Hierarchical Composite Fiber for Efficient Daytime Radiative Cooling and Antibacterial Protective Textiles. ACS APPLIED MATERIALS & INTERFACES 2023; 15:8537-8545. [PMID: 36726324 DOI: 10.1021/acsami.2c21832] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Incorporating passive radiative cooling into textiles is an effective way to improve individual personalized thermophysiological comfort for the human body. Based on radiative cooling textile design, rational functionalization further facilitates practical applications, especially for medical protective products with customized requirements. Herein, we present a hierarchical polyurethane/metal-organic framework (MOF) composite nanofiber membrane with an integrated radiative cooling effect and photocatalytic antibacterial property. Fabricated by a scalable electrospinning method, the hierarchical nanofiber membrane shows high solar reflectance of 97% and improved thermal emissivity of 93% attributed to the abundant chemical bonds in ZIF-8 nanoparticles, rendering a temperature drop of ∼7.2 °C under direct sunlight and ∼5.5 °C at night. In addition, the photocatalytic activity of ZIF-8 ensures a 96% bacterial mortality rate for preventing bacterial infection. In practical application, our composite fabric can prevent superheating by 4.4 °C compared with the traditional protective suit under direct sunlight. Along with its anti-infection ability, the composite fabric is desirable for medical protective textiles. The innovative integration of passive radiative cooling design and functional MOFs breaks through the traditional cooling mode and provides huge substantial advantages for smart textiles and personal cooling applications.
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Affiliation(s)
- Xuan Cai
- College of Chemistry and Materials Science, Jinan University, Guangzhou, Guangdong 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Liang Gao
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong 510006, P. R. China
| | - Jizhuang Wang
- College of Chemistry and Materials Science, Jinan University, Guangzhou, Guangdong 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Dan Li
- College of Chemistry and Materials Science, Jinan University, Guangzhou, Guangdong 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
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11
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Lei L, Shi S, Wang D, Meng S, Dai JG, Fu S, Hu J. Recent Advances in Thermoregulatory Clothing: Materials, Mechanisms, and Perspectives. ACS NANO 2023; 17:1803-1830. [PMID: 36727670 DOI: 10.1021/acsnano.2c10279] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Personal thermal management (PTM) is a promising approach for maintaining the thermal comfort zone of the human body while minimizing the energy consumption of indoor buildings. Recent studies have reported the development of numerous advanced textiles that enable PTM systems to regulate body temperature and are comfortable to wear. Herein, recent advancements in thermoregulatory clothing for PTM are discussed. These advances in thermoregulatory clothing have focused on enhancing the control of heat dissipation between the skin and the localized environment. We primarily summarize research on advanced clothing that controls the heat dissipation pathways of the human body, such as radiation- and conductance-controlled clothing. Furthermore, adaptive clothing such as dual-mode textiles, which can regulate the microclimate of the human body, as well as responsive textiles that address both thermal performance (warming and/or cooling) and wearability are discussed. Finally, we include a discussion on significant challenges and perspectives in this field, including large-scale production, smart textiles, bioinspired clothing, and AI-assisted clothing. This comprehensive review aims to further the development of sustainably manufactured advanced clothing with superior thermal performance and outstanding wearability for PTM in practical applications.
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Affiliation(s)
- Leqi Lei
- Department of Biomedical Engineering, City University of Hong Kong, 999077, Hong Kong SAR, China
| | - Shuo Shi
- Department of Biomedical Engineering, City University of Hong Kong, 999077, Hong Kong SAR, China
| | - Dong Wang
- Department of Biomedical Engineering, City University of Hong Kong, 999077, Hong Kong SAR, China
- Key Laboratory of Eco-Textile, College of Textiles and Clothing, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu214122, China
| | - Shuo Meng
- Department of Biomedical Engineering, City University of Hong Kong, 999077, Hong Kong SAR, China
| | - Jian-Guo Dai
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, 999077, Hong Kong SAR, China
| | - Shaohai Fu
- Key Laboratory of Eco-Textile, College of Textiles and Clothing, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu214122, China
| | - Jinlian Hu
- Department of Biomedical Engineering, City University of Hong Kong, 999077, Hong Kong SAR, China
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12
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Xie Z, Wang J, Yeow JTW. Flexible Multi-Element Photothermoelectric Detectors Based on Spray-Coated Graphene/Polyethylenimine Composites for Nondestructive Testing. ACS APPLIED MATERIALS & INTERFACES 2023; 15:5921-5930. [PMID: 36649212 DOI: 10.1021/acsami.2c20487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Photothermoelectric (PTE) detectors receive much attention owing to the superiority of self-powered, non-bias input, and friendly ambient environments, facilitating abundant prospective applications in industrial inspection, medical diagnostics, homeland security, and wearable Internet of Things. However, many drawbacks of currently applicable PTE materials, involving unstable material oxidation, an uncontrollable fabrication process, and unscalable manufacturing, hinder the development of industrial productions. Herein, we demonstrate a vertical graphene/polyethylenimine composite PTE detector fabricated with an optimized spray-coating method in compact alignment on various surfaces, achieving a significant photovoltage detectivity and responsivity of 6.05 × 107 cm Hz1/2 W-1 and 2.7 V W-1 response at a 973 K blackbody temperature radiation (2.98 μm peak wavelength). In addition, the long-term stability and resistible concave and convex bending flexibility are presented. Furthermore, a nondestructive testing system is established and verified through high-spatial-resolution and high-penetration illustration. Overall, the spray-coated and flexible PTE graphene/polyethylenimine multi-elements with broadband infrared absorption compatibility and stable energy conversion are promising candidates for future health monitoring and wearable electronics.
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Affiliation(s)
- Zhemiao Xie
- Advanced Micro-/Nano-Devices Lab, Department of Systems Design Engineering, University of Waterloo, 200 University Ave West, Waterloo, OntarioN2L 3G1, Canada
| | - Jiaqi Wang
- Advanced Micro-/Nano-Devices Lab, Department of Systems Design Engineering, University of Waterloo, 200 University Ave West, Waterloo, OntarioN2L 3G1, Canada
| | - John T W Yeow
- Advanced Micro-/Nano-Devices Lab, Department of Systems Design Engineering, University of Waterloo, 200 University Ave West, Waterloo, OntarioN2L 3G1, Canada
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13
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Meng X, Chen Z, Qian C, Song Z, Wang L, Li Q, Chen X. Hierarchical Superhydrophobic Poly(vinylidene fluoride- co-hexafluoropropylene) Membrane with a Bead (SiO 2 Nanoparticles)-on-String (Nanofibers) Structure for All-Day Passive Radiative Cooling. ACS APPLIED MATERIALS & INTERFACES 2023; 15:2256-2266. [PMID: 36541618 DOI: 10.1021/acsami.2c19422] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Passive all-day radiative cooling has been proposed as a promising pathway to cool objects by reflecting sunlight and dissipating heat to the cold outer space through atmospheric windows without any energy consumption. However, most of the existing radiative coolers are susceptible to contamination, which may decrease the optical property and gradually degrade the outdoor radiative cooling performance. Herein, we prepared a hierarchical superhydrophobic fluorinated-SiO2/PVDF-HFP nanofiber membrane by a facile and scalable technology of electrospinning and electrostatic spraying. Due to the synergistic effects of the efficient scattering of nanofibers/micropores and the phonon polarization resonance of SiO2 nanoparticles, the membrane achieves up to 97.8% average solar reflectance and 96.6% average atmospheric window emittance. The membrane displays sub-ambient temperature drop values of 11.5 and 4.1 °C in daytime and nighttime outdoor conditions, respectively, exhibiting remarkable radiative cooling performance. Importantly, the unique bead (SiO2 nanoparticles)-on-string (nanofibers) structure forms hierarchical roughness that endows the surface with a superior self-cleaning property. In addition, the obtained membrane exhibits remarkable flexibility and mechanical stability, which are of significant importance in cooling vehicles, buildings, and large-scale equipment.
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Affiliation(s)
- Xin Meng
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Zhaochuan Chen
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Chenlu Qian
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Zitao Song
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Lu Wang
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qiang Li
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xuemei Chen
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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14
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Iqbal MI, Lin K, Sun F, Chen S, Pan A, Lee HH, Kan CW, Lin CSK, Tso CY. Radiative Cooling Nanofabric for Personal Thermal Management. ACS APPLIED MATERIALS & INTERFACES 2022; 14:23577-23587. [PMID: 35562190 DOI: 10.1021/acsami.2c05115] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A wearable textile that is engineered to reflect incoming sunlight and allow the transmission of mid-infrared radiation simultaneously would have a great impact on the human body's thermal regulation in an outdoor environment. However, developing such a textile is a tough challenge. Using nanoparticle-doped polymer (zinc oxide and polyethylene) materials and electrospinning technology, we have developed a nanofabric with the desired optical properties and good applicability. The nanofabric offers a cool fibrous structure with outstanding solar reflectivity (91%) and mid-infrared transmissivity (81%). In an outdoor field test under exposure of direct sunlight, the nanofabric was demonstrated to reduce the simulated skin temperature by 9 °C when compared to skin covered by a cotton textile. A heat-transfer model is also established to numerically assess the cooling performance of the nanofabric as a function of various climate factors, including solar intensity, ambient air temperature, atmospheric emission, wind speed, and parasitic heat loss rate. The results indicate that the nanofabric can completely release the human body from unwanted heat stress in most conditions, providing an additional cooling effect as well as demonstrating worldwide feasibility. Even in some extreme conditions, the nanofabric can also reduce the human body's cooling demand compared with traditional cotton textile, proving this material as a feasible solution for better thermoregulation of the human body. The facile fabrication of such textiles paves the way for the mass adoption of energy-free personal cooling technology in daily life, which meets the growing demand for healthcare, climate change, and sustainability.
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Affiliation(s)
- Mohammad Irfan Iqbal
- School of Energy and Environment, City University of Hong Kong, Kowloon 999077, Hong Kong
| | - Kaixin Lin
- School of Energy and Environment, City University of Hong Kong, Kowloon 999077, Hong Kong
| | - Fengxin Sun
- Key Laboratory of Eco-textiles of Ministry of Education and Laboratory of Soft Fibrous Materials, College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Siru Chen
- School of Energy and Environment, City University of Hong Kong, Kowloon 999077, Hong Kong
| | - Aiqiang Pan
- School of Energy and Environment, City University of Hong Kong, Kowloon 999077, Hong Kong
| | - Hau Him Lee
- School of Energy and Environment, City University of Hong Kong, Kowloon 999077, Hong Kong
| | - Chi-Wai Kan
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon 999077, Hong Kong
| | - Carol Sze Ki Lin
- School of Energy and Environment, City University of Hong Kong, Kowloon 999077, Hong Kong
| | - Chi Yan Tso
- School of Energy and Environment, City University of Hong Kong, Kowloon 999077, Hong Kong
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15
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Gorji M, Mazinani S, Gharehaghaji AA. A review on emerging developments in thermal and moisture management by membrane‐based clothing systems towards personal comfort. J Appl Polym Sci 2022. [DOI: 10.1002/app.52416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mohsen Gorji
- New Technologies Research Center (NTRC) Amirkabir University of Technology Tehran Iran
| | - Saeedeh Mazinani
- New Technologies Research Center (NTRC) Amirkabir University of Technology Tehran Iran
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16
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Wang JH, Xue CH, Liu BY, Guo XJ, Hu LC, Wang HD, Deng FQ. A Superhydrophobic Dual-Mode Film for Energy-Free Radiative Cooling and Solar Heating. ACS OMEGA 2022; 7:15247-15257. [PMID: 35572754 PMCID: PMC9089744 DOI: 10.1021/acsomega.2c01947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 04/07/2022] [Indexed: 06/15/2023]
Abstract
Traditional electric cooling in summer and coal heating in winter consume a huge amount of energy and lead to a greenhouse effect. Herein, we developed an energy-free dual-mode superhydrophobic film, which consists of a white side with porous coating of styrene-ethylene-butylene-styrene/SiO2 for radiative cooling and a black side with nanocomposite coating of carbon nanotubes/polydimethylsiloxane for solar heating. In the cooling mode with the white side, the film achieved a high sunlight reflection of 94% and a strong long-wave infrared emission of 92% in the range of 8-13 μm to contribute to a temperature drop of ∼11 °C. In the heating mode with the black side, the film achieved a high solar absorption of 98% to induce heating to raise the air temperature beneath by ΔT of ∼35.6 °C. Importantly, both sides of the film are superhydrophobic with a contact angle over 165° and a sliding angle near 0°, showing typical self-cleaning effects, which defend the surfaces from outdoor contamination, thus conducive to long-term cooling and heating. This dual-mode film shows great potential in outdoor applications as coverings for both cooling in hot summer and heating in winter without an energy input.
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Affiliation(s)
- Jiang-He Wang
- College
of Chemistry and Chemical Engineering, Shaanxi
University of Science and Technology, Xi’an 710021, China
| | - Chao-Hua Xue
- College
of Chemistry and Chemical Engineering, Shaanxi
University of Science and Technology, Xi’an 710021, China
- College
of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Bing-Ying Liu
- College
of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Xiao-Jing Guo
- College
of Materials Science and Engineering, Shaanxi
University of Science and Technology, Xi’an 710021, China
| | - Li-Cui Hu
- College
of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Hui-Di Wang
- College
of Materials Science and Engineering, Shaanxi
University of Science and Technology, Xi’an 710021, China
| | - Fu-Quan Deng
- College
of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
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17
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Zhang Q, Wang S, Wang X, Jiang Y, Li J, Xu W, Zhu B, Zhu J. Recent Progress in Daytime Radiative Cooling: Advanced Material Designs and Applications. SMALL METHODS 2022; 6:e2101379. [PMID: 35212488 DOI: 10.1002/smtd.202101379] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/27/2021] [Indexed: 06/14/2023]
Abstract
Passive daytime radiative cooling (PDRC) is emerging as a promising cooling technology. Owing to the high, broadband solar reflectivity and high mid-infrared emissivity, daytime radiative cooling materials can achieve passive net cooling power under direct sunlight. The zero-energy-consumption characteristic enables PDRC to reduce negative environmental issues compared with conventional cooling systems. In this review, the development of advanced daytime radiative cooling designs is summarized, recent progress is highlighted, and potential correlated applications, such as building cooling, photovoltaic cooling, and electricity generation, are introduced. The remaining challenges and opportunities of PDRCs are also indicated. It is expected that this review provides an overall picture of recent PDRC progress and inspires future research regarding the fundamental understanding and practical applications of PDRC.
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Affiliation(s)
- Qian Zhang
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Frontiers Science Center For Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
- State Key Laboratory of New Textile Materials and Advanced Processing, Technologies, Wuhan Textile University, Wuhan, 430200, P. R. China
| | - Shuaihao Wang
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Frontiers Science Center For Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Xueyang Wang
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Frontiers Science Center For Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Yi Jiang
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Frontiers Science Center For Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Jinlei Li
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Frontiers Science Center For Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Weilin Xu
- State Key Laboratory of New Textile Materials and Advanced Processing, Technologies, Wuhan Textile University, Wuhan, 430200, P. R. China
| | - Bin Zhu
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Frontiers Science Center For Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Jia Zhu
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Frontiers Science Center For Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
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18
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Zhang X, Yang W, Shao Z, Li Y, Su Y, Zhang Q, Hou C, Wang H. A Moisture-Wicking Passive Radiative Cooling Hierarchical Metafabric. ACS NANO 2022; 16:2188-2197. [PMID: 35075910 DOI: 10.1021/acsnano.1c08227] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Developing functional textiles with a cooling effect is important for personal comfort in human life and activities. Although existing passive cooling fabrics exhibit promising cooling effects, they do not meet the thermal comfort requirements under many practical conditions. Here, we report a nanofiber membrane-based moisture-wicking passive cooling hierarchical metafabric that couples selective optical cooling and wick-evaporation cooling to achieve efficient temperature and moisture management. The hierarchical metafabric showed high sunlight reflectivity (99.16% in the 0.3-0.76 μm wavelength range and 88.60% in the 0.76-2.5 μm wavelength range), selective infrared emissivity (78.13% in the 8-13 μm wavelength range), and good moisture permeability owing to the optical properties of the material and hierarchical morphology design. Cooling performance experiments revealed that covering simulated skin with the hierarchical metafabric prevented overheating by 16.6 °C compared with traditional textiles, including a contribution from management of the humidity (∼8.2 °C). In addition to the personal thermal management ability, the hierarchical metafabric also showed good wearability.
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Affiliation(s)
- Xiaoshuang Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Weifeng Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Zhuwang Shao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Yaogang Li
- Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Donghua University, Shanghai 201620, P.R. China
| | - Yun Su
- College of Fashion and Design, Donghua University, Shanghai 200051, P.R. China
| | - Qinghong Zhang
- Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Donghua University, Shanghai 201620, P.R. China
| | - Chengyi Hou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Hongzhi Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
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19
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High-Performance photoinduced antimicrobial membrane toward efficient PM2.5-0.3 capture and Oil-Water separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120267] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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20
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Xie X, Liu Y, Zhu Y, Xu Z, Liu Y, Ge D, Yang L. Enhanced IR Radiative Cooling of Silver Coated PA Textile. Polymers (Basel) 2021; 14:polym14010147. [PMID: 35012169 PMCID: PMC8747296 DOI: 10.3390/polym14010147] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/24/2021] [Accepted: 12/28/2021] [Indexed: 11/30/2022] Open
Abstract
Smart textile with IR radiative cooling is of paramount importance for reducing energy consumption and improving the thermal comfort of individuals. However, wearable textile via facile methods for indoor/outdoor thermal management is still challenging. Here we present a novel simple, yet effective method for versatile thermal management via silver-coated polyamide (PA) textile. Infrared transmittance of coated fabric is greatly enhanced by 150% due to the multi-order reflection of silver coating. Based on their IR radiative cooling, indoors and outdoors, the skin surface temperature is lower by 1.1 and 0.9 °C than normal PA cloth, allowing the textile to be used in multiple environments. Moreover, the coated fabric is capable of active warming up under low voltage, which can be used in low-temperature conditions. These promising results exemplify the practicability of using silver-coated textile as a personal thermal management cloth in versatile environments.
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Affiliation(s)
- Xiaoyu Xie
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;
| | - Yang Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Institute of Functional Materials, Donghua University, Shanghai 201620, China; (Y.L.); (Z.X.); (D.G.)
| | - Ying Zhu
- College of Textiles, Donghua University, Shanghai 201620, China; (Y.Z.); (Y.L.)
| | - Zhao Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Institute of Functional Materials, Donghua University, Shanghai 201620, China; (Y.L.); (Z.X.); (D.G.)
| | - Yanping Liu
- College of Textiles, Donghua University, Shanghai 201620, China; (Y.Z.); (Y.L.)
| | - Dengteng Ge
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Institute of Functional Materials, Donghua University, Shanghai 201620, China; (Y.L.); (Z.X.); (D.G.)
| | - Lili Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;
- Correspondence:
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21
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Jing W, Zhang S, Zhang W, Chen Z, Zhang C, Wu D, Gao Y, Zhu H. Scalable and Flexible Electrospun Film for Daytime Subambient Radiative Cooling. ACS APPLIED MATERIALS & INTERFACES 2021; 13:29558-29566. [PMID: 34132091 DOI: 10.1021/acsami.1c05364] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Daytime radiative cooling materials reflect solar light and dissipate heat directly to outer space without any energy consumption, and thus, have attracted much attention due to the potential applications in many fields. Recently, elaborately designed photonic crystal and metamaterials have been reported for daytime subambient radiative cooling. However, such materials and structures have the drawbacks of complex shapes, inflexibility, high cost, and limitation in scaling up. It is also extremely difficult to apply such materials to buildings, vehicles, and other objects having complex surfaces. Here, a scalable and flexible hybrid film for daytime subambient radiative cooling was fabricated by a facile electrospinning method. The hybrid film consists of poly(vinylidene fluoride)/alumina (PVDF/Al2O3) fibers with diameters of 0.5-2.5 μm. Owing to the efficient scattering by fibers and Al2O3 nanoparticles, the hybrid film exhibits an extremely high average solar reflectance of 0.97. A high average atmospheric window emittance of 0.95 is simultaneously achieved due to the molecular vibrations of PVDF and the phonon polariton resonance of Al2O3 nanoparticles. The composite film delivers an average net radiative cooling power of 82.7 W/m2, and a temperature drop of up to 4.0 °C under direct sunlight. The hybrid film exhibits remarkable radiative cooling performance under different weather conditions including sunny, cloudy, overcast, and rainy. It can be used not only for cooling buildings and vehicles but also for delaying the melting of glaciers. This work demonstrates a promising method for scale-up production of the radiative cooling film with high performance.
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Affiliation(s)
- Weilong Jing
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, P. R. China
| | - Shuai Zhang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, P. R. China
| | - Wei Zhang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, P. R. China
| | - Zhang Chen
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Canying Zhang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, P. R. China
| | - Daxiong Wu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, P. R. China
| | - Yanfeng Gao
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Haitao Zhu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, P. R. China
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22
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Wu J, He J, Yin K, Zhu Z, Xiao S, Wu Z, Duan JA. Robust Hierarchical Porous PTFE Film Fabricated via Femtosecond Laser for Self-Cleaning Passive Cooling. NANO LETTERS 2021; 21:4209-4216. [PMID: 33970640 DOI: 10.1021/acs.nanolett.1c00038] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Passive cooling materials that spontaneously cool an object are promising choices for mitigating the global energy crisis. However, these cooling effects are usually weakened or lost when dust contaminates the surface structure, greatly restricting their applications. In this work, a robust hierarchical porous polytetrafluoroethylene (PTFE) film with coral-like micro/nanostructures is generated by a facile and efficient femtosecond laser ablation technique. Owing to its unique micro/nanostructures, the as-prepared surface exhibits an outstanding self-cleaning function for various liquids with ultralow adhesion. This self-cleaning characteristic enhances the durability of its passive cooling effect. It is demonstrated that the titanium (Ti) sheet covered with laser-ablated PTFE film can realize a maximum temperature decrease of 4 and 10 °C compared to the Ti sheet covered with pristine PTFE film and uncovered, respectively. This study reveals that femtosecond laser micromachining is a facile and feasible avenue to produce robust self-cleaning passive cooling devices.
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Affiliation(s)
- Junrui Wu
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, P.R. China
| | - Jun He
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, P.R. China
| | - Kai Yin
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, P.R. China
- The State Key Laboratory of High Performance and Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, P.R. China
| | - Zhuo Zhu
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, P.R. China
| | - Si Xiao
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, P.R. China
| | - Zhipeng Wu
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, P.R. China
| | - Ji-An Duan
- The State Key Laboratory of High Performance and Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, P.R. China
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23
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Chae D, Lim H, So S, Son S, Ju S, Kim W, Rho J, Lee H. Spectrally Selective Nanoparticle Mixture Coating for Passive Daytime Radiative Cooling. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21119-21126. [PMID: 33926186 DOI: 10.1021/acsami.0c20311] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Passive daytime radiative cooling, which is a process that removes excess heat to cold space as an infinite heat sink, is an emerging technology for applications that require thermal control. Among the different structures of radiative coolers, multilayer- and photonic-structured radiative coolers that are composed of inorganic layers still need to be simple to fabricate. Herein, we describe the fabrication of a nanoparticle-mixture-based radiative cooler that exhibits highly selective infrared emission and low solar absorption. Al2O3, SiO2, and Si3N4 nanoparticles exhibit intrinsic absorption in parts of the atmospheric transparency window; facile one-step spin coating of a mixture of these nanoparticles generates a surface with selective infrared emission, which can provide a more powerful cooling effect compared to broadband emitters. The nanoparticle-based radiative cooler exhibits an extremely low solar absorption of 4% and a highly selective emissivity of 88.7% within the atmospheric transparency window owing to the synergy of the optical properties of the material. The nanoparticle mixture radiative cooler produces subambient cooling of 2.8 °C for surface cooling and 1.0 °C for space cooling, whereas the Ag film exhibits an above-ambient cooling of 1.1 °C for surface cooling and 3.4 °C for space cooling under direct sunlight.
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Affiliation(s)
- Dongwoo Chae
- Department of Materials Science and Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Hangyu Lim
- Department of Materials Science and Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Sunae So
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Soomin Son
- Department of Materials Science and Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Sucheol Ju
- Department of Materials Science and Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Wonjoong Kim
- Department of Materials Science and Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Junsuk Rho
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Heon Lee
- Department of Materials Science and Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Republic of Korea
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24
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Yang J, Zhang X, Zhang X, Wang L, Feng W, Li Q. Beyond the Visible: Bioinspired Infrared Adaptive Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004754. [PMID: 33624900 DOI: 10.1002/adma.202004754] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 10/07/2020] [Indexed: 05/24/2023]
Abstract
Infrared (IR) adaptation phenomena are ubiquitous in nature and biological systems. Taking inspiration from natural creatures, researchers have devoted extensive efforts for developing advanced IR adaptive materials and exploring their applications in areas of smart camouflage, thermal energy management, biomedical science, and many other IR-related technological fields. Herein, an up-to-date review is provided on the recent advancements of bioinspired IR adaptive materials and their promising applications. First an overview of IR adaptation in nature and advanced artificial IR technologies is presented. Recent endeavors are then introduced toward developing bioinspired adaptive materials for IR camouflage and IR radiative cooling. According to the Stefan-Boltzmann law, IR camouflage can be realized by either emissivity engineering or thermal cloaks. IR radiative cooling can maximize the thermal radiation of an object through an IR atmospheric transparency window, and thus holds great potential for use in energy-efficient green buildings and smart personal thermal management systems. Recent advances in bioinspired adaptive materials for emerging near-IR (NIR) applications are also discussed, including NIR-triggered biological technologies, NIR light-fueled soft robotics, and NIR light-driven supramolecular nanosystems. This review concludes with a perspective on the challenges and opportunities for the future development of bioinspired IR adaptive materials.
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Affiliation(s)
- Jiajia Yang
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Xinfang Zhang
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
- Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH, 44242, USA
| | - Xuan Zhang
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Ling Wang
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Wei Feng
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
- Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin, 300350, China
| | - Quan Li
- Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH, 44242, USA
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25
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Zhang J, Zhou Z, Tang H, Xing J, Quan J, Liu J, Yu J, Hu M. Mechanically Robust and Spectrally Selective Convection Shield for Daytime Subambient Radiative Cooling. ACS APPLIED MATERIALS & INTERFACES 2021; 13:14132-14140. [PMID: 33724770 DOI: 10.1021/acsami.0c21204] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
As a passive cooling strategy, radiative cooling is becoming an appealing approach to dissipate heat from terrestrial emitters to the outer space. However, the currently achieved cooling performance is still underperforming due to considerable solar radiation absorbed by the emitter and nonradiative heat transferred from the surroundings. Here, we proposed a mechanically robust and spectrally selective convection shield composed of nanoporous composite fabric (NCF) to achieve daytime subambient radiative cooling. By selectively reflecting ∼95% solar radiation, transmitting ∼84% thermal radiation, and suppressing the nonradiative heat transferred from warmer surroundings, the NCF-based radiative cooler demonstrated an average daytime temperature reduction of ∼4.9 °C below the ambient temperature, resulting in an average net radiative cooling power of ∼48 W/m2 over a 24 h measurement. In addition, we also modeled the potential cooling capacity of the NCF-based radiative cooler and demonstrated that it can cover the cooling demands of energy-efficient residential buildings in most regions of China. Excellent spectral selectivity, mechanical strength, and weatherability of the NCF cover enable a much broader selection for the emitters, which is promising in the real-world deployment of direct daytime subambient radiative cooling.
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Affiliation(s)
- Ji Zhang
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, College of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Zhihua Zhou
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, College of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Huajie Tang
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, College of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Jincheng Xing
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, College of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Jiayou Quan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Junwei Liu
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, College of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Junrong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Mingke Hu
- Department of Architecture and Built Environment, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
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26
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Guo Z, Sun C, Wang J, Cai Z, Ge F. High-Performance Laminated Fabric with Enhanced Photothermal Conversion and Joule Heating Effect for Personal Thermal Management. ACS APPLIED MATERIALS & INTERFACES 2021; 13:8851-8862. [PMID: 33565864 DOI: 10.1021/acsami.0c23123] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Multifunctional wearable heaters have attracted much attention owing to their efficient application in personal thermal management. Inspired by the polar bear's thermal management, a laminated fabric with enhanced photothermal conversion, mid-infrared reflection, thermal insulation, and electrical heating performance was developed in this work, which was made of CNT/cellulose aerogel layers, cotton fabrics, and copper nanowire (CuNW)-based conductive network (CNN) layers. The CNN layer made up of highly conductive CuNWs not only exhibits better conductivity to realize the Joule heating effect but also possesses a human mid-infrared reflection property. Moreover, the other side of the cotton fabric was laminated with CNT/cellulose aerogel, which enables the fabric to have a good photothermal conversion ability and thermal insulation performance. The temperature of the laminated fabric could reach to 70 °C within 80 s under 1.8 V; it requires more than 500 s to return to room temperature (28.7 °C). When the light intensity was adjusted to 1000 W/m2, the temperature of the laminated fabric was about 74.0 °C after lighting for 280 s. Our work provides a new approach to improving the performance and energy-saving of personal thermal management fabrics.
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Affiliation(s)
- Zhiguang Guo
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai201620, China
| | - Chao Sun
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai201620, China
| | - Juan Wang
- Technology Innovation Center of Hebei for Fiber Material, Shijiazhuang University, Shijiazhuang, Hebei050035, China
| | - Zaisheng Cai
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai201620, China
- Key Lab of Science & Technology of Eco-textile, Ministry of Education, Donghua University, Shanghai201620, China
| | - Fengyan Ge
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai201620, China
- Key Lab of Science & Technology of Eco-textile, Ministry of Education, Donghua University, Shanghai201620, China
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27
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Kim H, McSherry S, Brown B, Lenert A. Selectively Enhancing Solar Scattering for Direct Radiative Cooling through Control of Polymer Nanofiber Morphology. ACS APPLIED MATERIALS & INTERFACES 2020; 12:43553-43559. [PMID: 32799439 DOI: 10.1021/acsami.0c09374] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Radiative cooling can alleviate urban heat island effects and passively improve personal thermal comfort. Among many emerging approaches, infrared (IR) transparent films and fabrics are promising because they can allow objects to directly radiate heat through bands of atmospheric transparency while blocking solar heating. However, achieving high solar reflectance while maintaining IR transmittance using scalable nanostructured materials requires control over the shape and size distribution of the nanoscale building blocks. Here, we investigate the scattering and transmission properties of electrospun polyacrylonitrile (PAN) nanofibers that feature spherical, ellipsoidal, and cylindrical morphologies. We find that nanofibers that have ellipsoidal beads exhibit the most efficient solar scattering, mainly due to the additive dielectric resonances of the ellipsoidal and cylindrical geometries, as confirmed through electromagnetic simulations. This favorable scattering decreases the amount of material needed to reach above 95% solar reflectance, which, in turn, enables high infrared transmittance (>70%) despite PAN's intrinsic IR absorption. We further show that these PAN nanofibers (nanoPAN) can enable cooling of surfaces with relatively low solar reflectance, which is demonstrated by covering a reference blackbody surface with beaded nanoPAN. During peak solar hours, this configuration lowers the temperature of the black surface by approximately 50 °C and is able to achieve as low as 3 °C below the ambient air temperature. More broadly, our demonstration using PAN, which is not as IR transparent as more commonly used polyethylene, provides a method for utilizing lower purity materials in radiative cooling.
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Affiliation(s)
- Hannah Kim
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, United States
| | - Sean McSherry
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, United States
| | - Brendon Brown
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, United States
| | - Andrej Lenert
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, United States
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Kang H, Qiao Y, Li Y, Qin W, Wu X. Keep Cool: Polyhedral ZnO@ZIF-8 Polymer Coatings for Daytime Radiative Cooling. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01178] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hongjun Kang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P.R. China
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P.R. China
| | - Yadong Qiao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P.R. China
| | - Yang Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P.R. China
| | - Wei Qin
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P.R. China
| | - Xiaohong Wu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P.R. China
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Chae D, Kim M, Jung PH, Son S, Seo J, Liu Y, Lee BJ, Lee H. Spectrally Selective Inorganic-Based Multilayer Emitter for Daytime Radiative Cooling. ACS APPLIED MATERIALS & INTERFACES 2020; 12:8073-8081. [PMID: 31990166 DOI: 10.1021/acsami.9b16742] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Daytime radiative coolers are used to pump excess heat from a target object into a cold exterior space without energy consumption. Radiative coolers have become attractive cooling options. In this study, a daytime radiative cooler was designed to have a selective emissive property of electromagnetic waves in the atmospheric transparency window of 8-13 μm and preserve low solar absorption for enhancing radiative cooling performance. The proposed daytime radiative cooler has a simple multilayer structure of inorganic materials, namely, Al2O3, Si3N4, and SiO2, and exhibits high emission in the 8-13 μm region. Through a particle swarm optimization method, which is based on an evolutionary algorithm, the stacking sequence and thickness of each layer were optimized to maximize emissions in the 8-13 μm region and minimize the cooling temperature. The average value of emissivity of the fabricated inorganic radiative cooler in the 8-13 μm range was 87%, and its average absorptivity in the solar spectral region (0.3-2.5 μm) was 5.2%. The fabricated inorganic radiative cooler was experimentally applied for daytime radiative cooling. The inorganic radiative cooler can reduce the temperature by up to 8.2 °C compared to the inner ambient temperature during the daytime under direct sunlight.
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Affiliation(s)
- Dongwoo Chae
- Department of Materials Science and Engineering , Korea University , Anam-ro 145 , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| | - Mingeon Kim
- Department of Mechanical Engineering , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Republic of Korea
| | - Pil-Hoon Jung
- Department of Materials Science and Engineering , Korea University , Anam-ro 145 , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| | - Soomin Son
- Department of Materials Science and Engineering , Korea University , Anam-ro 145 , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| | - Junyong Seo
- Department of Mechanical Engineering , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Republic of Korea
| | - Yuting Liu
- Department of Materials Science and Engineering , Korea University , Anam-ro 145 , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| | - Bong Jae Lee
- Department of Mechanical Engineering , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Republic of Korea
| | - Heon Lee
- Department of Materials Science and Engineering , Korea University , Anam-ro 145 , Seongbuk-gu, Seoul 136-713 , Republic of Korea
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