Polymer-Based Electrochemical Devices

1992 ◽  
Vol 293 ◽  
Author(s):  
C. Arbizzani ◽  
M. Mastragostino ◽  
L. Meneghello ◽  
X. Andrieu ◽  
T. Vicedo
Keyword(s):  
Conducting Polymers ◽  
Polymer Electrolyte ◽  
Light Transmission ◽  
Polymer Network ◽  
Electrochromic Devices ◽  
Electrochromic Materials ◽  
Testing Data ◽  
Electrochemical Devices ◽  
Electronically Conducting Polymers ◽  
Variable Light

AbstractSelected findings of ongoing investigations of variable light-transmission electrochromic devices using electronically conducting polymers as electrochromic materials are presented and discussed.An obvious requisite for electrochromic windows is an all-solid configuration with polymer electrolyte; in this connection testing data of a new hybrid electrolyte based on a polymer network including a plasticizer are reported and discussed.

Electrochemical Properties and Applications of Ionically and Electronically Conducting Polymers

1990 ◽  
Vol 210 ◽  
Author(s):  
Fausto Croce ◽  
Stefania Panero ◽  
Bruno Scrosati
Keyword(s):  
Solid State ◽  
Conducting Polymers ◽  
Polymer Electrolytes ◽  
Polymeric Materials ◽  
Specific Interest ◽  
Solid State Ionics ◽  
Polymer Electrodes ◽  
Electrochemical Devices ◽  
Electronically Conducting Polymers ◽  
State Electrochemistry

AbstractVarious types of polymeric materials with enhanced electrical properties have been characterized recently. Many of these conducting polymers are of specific interest in solid state electrochemistry and in solid state ionics since they act as novel electrode and electrolyte materials. Indeed, these materials are currently used as improved polymer electrolytes and polymer electrodes for the development of advanced-design electrochemical devices. However, there are still some problems which prevent the wide utilization of these conductors. In this paper we attempt to identify the nature of these problems and discuss their possible solutions.

scholarly journals Portable Photovoltaic-Self-Powered Flexible Electrochromic Windows for Adaptive Envelopes

2021 ◽  
Vol 2 (2) ◽  
pp. 174-185
Author(s):  
Antonio Cánovas-Saura ◽  
Ramón Ruiz ◽  
Rodolfo López-Vicente ◽  
José Abad ◽  
Antonio Urbina ◽  
...  
Keyword(s):  
Power Supply ◽  
Organic Solar Cells ◽  
Market Integration ◽  
Control Method ◽  
Light Transmission ◽  
Transmission Function ◽  
Electronic Control ◽  
Electrochromic Devices ◽  
Large Area ◽  
Self Powered

Variable transmission applications for light control or energy saving based on electrochromic materials have been successfully applied in the past in the building, sports, or automotive fields, although lower costs and ease of fabrication, installation, and maintenance are still needed for deeper market integration. In this study, all-printed large area (900 cm2 active area) flexible electrochromic devices were fabricated, and an autoregulating self-power supply was implemented through the use of organic solar cells. A new perspective was applied for automotive light transmission function, where portability and mechanical flexibility added new features for successful market implementation. Special emphasis was placed in applying solution-based scalable deposition techniques and commercially available materials (PEDOT-PSS as an electrochromic material; vanadium oxide, V2O5, as a transparent ion-storage counter electrode; and organic solar modules as the power supply). A straightforward electronic control method was designed and successfully implemented allowing for easy user control. We describe a step-by-step route following the design, materials optimization, electronic control simulation, in-solution fabrication, and scaling-up of fully functional self-powered portable electrochromic devices.

scholarly journals Color Tuning by Oxide Addition in PEDOT:PSS-Based Electrochromic Devices

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 179 ◽  
Author(s):  
Delphin Levasseur ◽  
Issam Mjejri ◽  
Thomas Rolland ◽  
Aline Rougier
Keyword(s):  
Thin Films ◽  
Iron Oxide ◽  
Conducting Polymers ◽  
Applied Voltage ◽  
Oxide Content ◽  
Electrochromic Devices ◽  
Careful Evaluation ◽  
Pedot Film ◽  
Oxide Addition ◽  
Dark Blue

Poly(3,4-ethylenedi-oxythiophene) (PEDOT) derivatives conducting polymers are known for their great electrochromic (EC) properties offering a reversible blue switch under an applied voltage. Characterizations of symmetrical EC devices, built on combinations of PEDOT thin films, deposited with a bar coater from commercial inks, and separated by a lithium-based ionic membrane, show highest performance for 800 nm thickness. Tuning of the color is further achieved by mixing the PEDOT film with oxides. Taking, in particular, the example of optically inactive iron oxide Fe2O3, a dark blue to reddish switch, of which intensity depends on the oxide content, is reported. Careful evaluation of the chromaticity parameters L*, a*, and b*, with oxidizing/reducing potentials, evidences a possible monitoring of the bluish tint.

PROMISING METHODS FOR PRODUCTION OF ELECTROCHROMIC DEVICES BASED ON NANOSTRUCTURED COATINGS (review)

2021 ◽  
pp. 99-108
Author(s):  
P.A. Shchur ◽  
◽  
L.V. Solovyanchik ◽  
S.V. Kondrashov ◽  
◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Science And Technology ◽  
Nanostructured Coatings ◽  
Electrochromic Devices ◽  
Electrochromic Materials ◽  
Electrochromic Properties ◽  
Modern Methods ◽  
Materials Used

Paper presents the most common materials for nanostructured inorganic electrochromic coatings, describes the methods of their formation. The prospects for the use of electrochromic materials in various industries – construction, auto and aircraft construction are considered. The analysis of modern methods for the formation of nanostructured electrochromic materials used in various fields of science and technology is presented. The prospects for the use of tungsten oxide, as well as the possibility of its modification in order to improve its functional electrochromic properties, are shown.

scholarly journals Fabrication of Electrochromic Devices Using Double Layer Conducting Polymers for Infrared Transmittance Control

2014 ◽  
Vol 3 (2) ◽  
pp. 32-34
Author(s):  
Jin Kyu Kim ◽  
Jong Kwan Koh ◽  
Bumsoo Kim ◽  
Seokwoo Jeon ◽  
Joonmo Ahn ◽  
...  
Keyword(s):  
Conducting Polymers ◽  
Double Layer ◽  
Electrochromic Devices ◽  
Infrared Transmittance

Photoinitiators in Dentistry: A Review

2013 ◽  
Vol 2 (4) ◽  
pp. 30-33 ◽  
Author(s):  
Ario Santini ◽  
Iranzihuatl Torres Gallegos ◽  
Christopher M. Felix
Keyword(s):  
Light Transmission ◽  
Uv Light ◽  
Energy Levels ◽  
Polymer Network ◽  
Filling Material ◽  
Restorative Material ◽  
Spectral Emission ◽  
Potential Health ◽  
Posterior Teeth ◽  
Light Curing

Polymerization of Resin Based Composites (RBCs) initiated by a light curing unit activating photoinitiators. Different RBCs require different light energy levels for proper curing. Manufacturers are now producing RBCs with more than one initiator and not all of these will be properly polymerised with blue LED lights. An added problem is that manufacturers do not always indicate the type of photoinitiators in their materials. This review discusses the importance of matching the spectral output of LCUs to the absorption spectra of RBCs and the consequences of spectral mismatch. Resin based composites (RBCs) were first introduced in the 1960s1 and with development of effective and reliable dentine bonding systems2, have been used routinely as a filling material for both anterior and posterior teeth. The early RBCs were either chemically cured two component materials or photo-initiated materials that used UV initiators in the beginning and then transitioned to visible light initiators such as camphorquinine which was introduced in 1978.3 The first report of a light curing material was of an ultraviolet (UV) cured fissure sealant.4 However, due to the limited penetration depth of the UV light and the potential health hazards, this system was quickly abandoned. The advancement of science yielded light curing materials which contributed to a significant clinical progress over the UV and chemically cured RBCs.4 Additional advancements to direct RBC restoration materials included luting agents for ceramic restorations, pit and fissure sealants and resin modified glass ionomers. Polymerization in an RBC is initiated by a light curing unit (LCU); this technology is based on the use of photoreactive systems that absorb light irradiation from the LCUs at appropriate wavelength. Then the photoinitiators contained in the RBCs, absorb the incoming photons from the LCU and the monomers in the molecular structure become excited and in that active state, there is a change from monomers into a polymer network6. The success of this technology hinges on matching the spectral emission of the LCU with the requirements of the photoinitiator system to convert the monomers into a polymer network. The amount of activated photo initiator depends on the concentration of photoinitiator in the material, the number of photons to which the material is exposed and the energy of the photons (wavelength), the latter depending on the curing light.6 The most common photoinitiator in dental materials today is camphorquinone, which has a peak activity around 470 nanometres.6 The factors affecting polymerization include filler type, size and loading, the thickness and shade of the restorative material, the effectiveness of light transmission (eg. light guide tips being free from debris and scratches), exposure time, distance of the light source from the restorative material and light intensity.7 It is important to note that the photoinitiator activation occurs at specific wavelengths, in other words, the optimum efficiency is obtained when the peak absorptivity of the photoinitiator corresponds with the spectral emission from the LCU. Commercially available curing units have different light intensities and light sources, with energy levels in QTH, LED and other LCUs ranging from 300 to more than 2000 mW/cm.

Studies of Electronically Conducting Polymers for Corrosion Inhibition of Aluminum and Steel

1999 ◽  
pp. 201-207
Author(s):  
Dennis E. Tallman ◽  
Youngun Pae ◽  
Guoliang Chen ◽  
Gordon P. Bierwagenz ◽  
Brent Reems ◽  
...  
Keyword(s):  
Conducting Polymers ◽  
Corrosion Inhibition ◽  
Electronically Conducting Polymers

Study of proton-conducting polymer electrolyte based on K-carrageenan and NH4SCN for electrochemical devices

Ionics ◽  
2018 ◽  
Vol 24 (11) ◽  
pp. 3535-3542 ◽  
Author(s):  
P. Christopher Selvin ◽  
P. Perumal ◽  
S. Selvasekarapandian ◽  
S. Monisha ◽  
G. Boopathi ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Conducting Polymer ◽  
Proton Conducting ◽  
Electrochemical Devices
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