Reflective properties of electrochromic devices with polymer electrolytes

• Grant number: 14/17174-4
• Support Opportunities: Multi-user Equipment Program
• Start date: April 01, 2015
• End date: March 31, 2017
• 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 research grant: 13/19297-3 - Reflective properties of electrochromic devices with polymer electrolytes, AP.R
• EMU web page: Página do Equipamento Multiusuário não informada
• Type of equipment: Caracterização de Materiais - Espectroscopia - Óptica (UV-Visível)
• Manufacturer: Fabricante não informado
• Model: Modelo não informado

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

(4)

(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)

LEONES, RITA; SABADINI, RODRIGO C.; SENTANIN, FRANCIANI C.; ESPERANCA, JOSE M. S. S.; PAWLICKA, AGNIESZKA; SILVA, MARIA MANUELA. Polymer electrolytes for electrochromic devices through solvent casting and sol-gel routes. SOLAR ENERGY MATERIALS AND SOLAR CELLS, v. 169, p. 98-106, SEP 2017. (14/17174-4)

ALVES, R.; SENTANIN, F.; SABADINI, R. C.; FERNANDES, M.; DE ZEA BERMUDEZ, V.; PAWLICKA, A.; SILVA, M. M.. Samarium (III) triflate-doped chitosan electrolyte for solid state electrochromic devices. Electrochimica Acta, v. 267, p. 51-62, MAR 20 2018. (14/17174-4)

ALVES, R.; SENTANIN, F.; SABADINI, R. C.; PAWLICKA, A.; SILVA, M. M.. Solid polymer electrolytes based on chitosan and Dy(CF3SO3)(3) for electrochromic devices. Solid State Ionics, v. 310, p. 112-120, NOV 1 2017. (14/17174-4)

PAWLICKA, AGNIESZKA; SABADINI, RODRIGO C.; NUNZI, JEAN-MICHEL. Reversible light-induced solubility of disperse red 1 dye in a hydroxypropyl cellulose matrix. Cellulose, v. 25, n. 3, p. 2083-2090, MAR 2018. (16/13184-0, 14/17174-4)