Reflective properties of electrochromic devices with polymer electrolytes

• Grant number: 13/19297-3
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2014
• End date: December 31, 2016
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Agnieszka Joanna Pawlicka Maule
• Grantee: Agnieszka Joanna Pawlicka Maule
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated researchers: Carla Cristina Schmitt Cavalheiro ; Cesar Antonio Oropesa Avellaneda
• Associated research grant(s): 14/17174-4 - Reflective properties of electrochromic devices with polymer electrolytes, AP.EMU

Abstract

The aim of this proposal is to study the reflective properties of electrochromic devices containing natural and/or synthetic polymers as electrolytes. The electrochromic devices will be obtained by assembling electrochromic layer, counter electrode consisting of CeO2-TiO2 and electrolyte based on synthetic or natural macromolecules such as agar, pectin, gelatin and DNA, developed in our laboratory. The analysis and characterization of the electrochromic windows will be performed trough the electrochemical and spectroscopic measurements for the colored and transparent states. The values of inserted and extracted charges, potential window of operation as well as the number of cycles, color/bleaching time and memory of the devices in open circuit will be obtained. Beside this the main objective is to determine the device color LAB parameters using CIELAB 1976 system. These measurements will be performed in reflectance mode on windows with different compositions in order to correlate the composition with the obtained parameters. Aiming possible practical applications the possibility of using flexible transparent substrate as PET/ITO and the rigid-reflective-substrate as stainless steel to obtain different devices will be also investigated. Finally, to achieve high contrast ratios use of a complementary color to the primary electrochromic layer electrodes as poly (ethylene dioxitiofeno) (PEDOT) and WO3, respectively will be tested. (AU)

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ALVES, R.; DONOSO, J. P.; MAGON, C. J.; SILVA, I. D. A.; PAWLICKA, A.; SILVA, M. M.. Solid polymer electrolytes based on chitosan and europium triflate. Journal of Non-Crystalline Solids, v. 432, n. B, p. 307-312, JAN 15 2016. (13/19297-3, 13/07793-6)

ALVES, R.; SENTANIN, F.; SABADINI, R. C.; PAWLICKA, A.; SILVA, M. M.. Innovative electrolytes based on chitosan and thulium for solid state applications: Synthesis, structural, and thermal characterization. Journal of Electroanalytical Chemistry, v. 788, p. 156-164, MAR 1 2017. (13/19297-3)

ASSIS, L. M. N.; SABADINI, R. C.; SANTOS, L. P.; KANICKI, J.; LAPKOWSKI, M.; PAWLICKA, A.. Electrochromic device with Prussian blue and HPC-based electrolyte. Electrochimica Acta, v. 182, p. 878-883, NOV 10 2015. (14/21329-3, 13/19297-3)

ALVES, R.; SENTANIN, F.; SABADINI, R. C.; PAWLICKA, A.; SILVA, M. M.. Innovative electrolytes based on chitosan and thulium for solid state applications: Synthesis, structural, and thermal characterization. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 788, p. 9-pg., 2017-03-01. (13/19297-3)

ALVES, R.; DONOSO, J. P.; MAGON, C. J.; SILVA, I. D. A.; PAWLICKA, A.; SILVA, M. M.. Solid polymer electrolytes based on chitosan and europium triflate. Journal of Non-Crystalline Solids, v. 432, p. 6-pg., 2016-01-15. (13/19297-3, 13/07793-6)