Composite Film of Vanadium Dioxide Nanoparticles and Ionic Liquid-Nickel-Chlorine Complexes with Excellent Visible Thermochromic Performance

Jingting Zhu; Aibin Huang; Haibin Ma; Yining Ma; Kun Tong; Shidong Ji; Shanhu Bao; Xun Cao; Ping Jin

doi:10.1021/acsami.6b11202

Composite Film of Vanadium Dioxide Nanoparticles and Ionic Liquid-Nickel-Chlorine Complexes with Excellent Visible Thermochromic Performance

ACS Appl Mater Interfaces. 2016 Nov 2;8(43):29742-29748. doi: 10.1021/acsami.6b11202. Epub 2016 Oct 24.

Authors

Jingting Zhu^{1

2}, Aibin Huang^{1

2}, Haibin Ma^{1

2}, Yining Ma^{1

2}, Kun Tong^{1

2}, Shidong Ji¹, Shanhu Bao¹, Xun Cao¹, Ping Jin^{1

3}

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China.
² University of Chinese Academy of Sciences , Yuquan 19, Shijingshan, Beijing, 100049, China.
³ Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology (AIST) , Moriyama, Nagoya 463-8560, Japan.

PMID: 27739664
DOI: 10.1021/acsami.6b11202

Abstract

Vanadium dioxide (VO₂), as a typical thermochromic material used in smart windows, is always limited by its weaker solar regulation efficiency (ΔT_sol) and lower luminous transmittance (T_lum). Except for common approaches such as doping, coating, and special structure, compositing is another effective method. The macroscopic thermochromic (from colorless to blue) ionic liquid-nickel-chlorine (IL-Ni-Cl) complexes are selected in this paper to be combined with VO₂ nanoparticles forming a composite film. This novel scheme demonstrates outstanding optical properties: ΔT_sol = 26.45% and T_lum,l = 66.44%, T_lum,h = 43.93%. Besides, the addition of the IL-Ni-Cl complexes endows the film with an obvious color change from light brown to dark green as temperature rises. This splendid visible thermochromic performance makes the composite film superior in function exhibiting and application of smart windows.

Keywords: color change; excellent performance; ionic liquid−nickel−chlorine complexes; vanadium dioxide; visible thermochromism.