High-throughput roll-to-roll fabrication of flexible thermochromic coatings for smart windows with VO2 nanoparticles
SCIE
SCOPUS
- Title
- High-throughput roll-to-roll fabrication of flexible thermochromic coatings for smart windows with VO2 nanoparticles
- Authors
- KIMYOUNGKWANG; SANGBAE, YU; JAESEOUNG, PARK; YOON, DASEOB; AMIR, MASOUD DAYAGHI; KUN, JOONG KIM; Jin Soo Ahn; SON, JUNWOO
- Date Issued
- 2018-02
- Publisher
- Royal Society of Chemistry
- Abstract
- VO2-based ‘nanothermochromics’ that utilize the dispersion of VO2 nanoparticles in a passive host matrix have been evaluated as an economic strategy of “smart” windows to reduce energy consumption for heating and air conditioning in buildings. Here, we demonstrate a high-throughput roll-to-roll fabrication of thermochromic coatings for smart windows that can adapt their optical properties in accordance with external temperature. A large quantity (250 g) of VO2 nanoparticles (NPs) was synthesized at one time by controlled thermal treatment of bead-milled V2O5 NPs as a fast and inexpensive method. The amorphous nature of bead-milled V2O5 NPs combined with their nanometer size kinetically facilitates uniform synthesis of high-quality VO2 NPs even under less-reducing conditions than those used to obtain bulk VO2. This mass production of VO2 NPs could be used to fabricate the largest thermochromic coatings with VO2/PVP composites (12 cm × 600 cm) yet produced with excellent infrared modulation ability (∼45%). This scalable and continuous production of large coatings with thermochromic NPs will accelerate the commercialization of thermochromic coatings for smart windows, which will contribute to a large reduction in energy consumption to heat or cool buildings.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50108
- DOI
- 10.1039/C7TC05876D
- ISSN
- 2050-7526
- Article Type
- Article
- Citation
- Journal of Materials Chemistry C, vol. 6, no. 13, page. 3451 - 3458, 2018-02
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