2024-03-29T07:19:51Zhttps://www.tdx.cat/oai/requestoai:www.tdx.cat:10803/104072017-09-22T19:24:00Zcom_10803_480col_10803_386424
nam a 5i 4500
chemical capacitance
impedance
chromogenic materials
amorphous tungsten oxide
cyclic voltammetry
Estudio de los procesos de intercalación en materiales electrómicos (a-WO3, polímeros conductores y viológenos)
[Castelló] :
Universitat Jaume I,
2011
Accés lliure
http://hdl.handle.net/10803/10407
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García Cañadas, Jorge,
autor
Tesi
Doctorat
Universitat Jaume I. Departament de Ciències Experimentals
2006
Universitat Jaume I. Departament de Ciències Experimentals
Tesis i dissertacions electròniques
Garcia Belmonte, Germà,
supervisor acadèmic
TDX
This thesis presents thermodynamic studies performed by electrochemical methods (cyclic voltammetry, electrochemical impedance and chronopotenciometry) in three of the most important electrochromic materials: a-WO3, conducting polymers and viologens. Electrochromic materials are very promising as a low-consuming technology. By incorporating these materials in windows of buildings or vehicles, approximately a 30% of the consumed energy in these systems can be saved.<br/>Regarding the a-WO3, apart from other contributions, a new model based on lattice distortions, able to explain the intercalation thermodynamic in this material, is proposed. In the conducting polymers field, a Gaussian energy distribution is proved to account for the initial part of the so broad oxidation peaks observed in cyclic voltammetry. Finally, the coloration kinetics of the viologen modified n-TiO2 electrode is explained.
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