Electrochemical and Structural Characterization of Polymer Gel Electrolytes Based on a PEO Copolymer and an Imidazolium-Based Ionic Liquid for Dye-Sensitized Solar Cells

dc.creatorFreitas, FS
dc.creatorde Freitas, JN
dc.creatorIto, BI
dc.creatorDe Paoli, MA
dc.creatorNogueira, AF
dc.date2009
dc.dateDEC
dc.date2014-11-18T17:43:53Z
dc.date2015-11-26T17:52:54Z
dc.date2014-11-18T17:43:53Z
dc.date2015-11-26T17:52:54Z
dc.date.accessioned2018-03-29T00:36:26Z
dc.date.available2018-03-29T00:36:26Z
dc.identifierAcs Applied Materials & Interfaces. Amer Chemical Soc, v. 1, n. 12, n. 2870, n. 2877, 2009.
dc.identifier1944-8244
dc.identifierWOS:000273005500025
dc.identifier10.1021/am900596x
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/65136
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/65136
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/65136
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1290379
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionPolymer electrolytes based on mixtures of poly(ethylene oxide-co-propylene oxide) and 1-methyl-3-propyl-imidazolium iodide (MPII) were investigated, aiming at their application in dye-sensitized solar cells (DSSC). The interactions between the copolymer and the ionic liquid were analyzed by infrared spectroscopy and (1)H NMR. The results show interactions between the ether oxygen in the polymer and the hydrogen in the imidazolium cations. The ionic conductivities, electrochemical behaviors, and thermal properties of the electrolytes containing different concentrations of MPII were investigated. The electrolyte containing 70 wt % MPII presented the highest ionic conductivity (2.4 x 10(-3) S cm(-1)) and a diffusion coefficient of 1.9 x 10(-7) cm(2) s(-1). The influence of Lil addition to the electrolytes containing different concentrations of MPII was also investigated. The DSSC assembled with the electrolyte containing 70 wt % MPII showed an efficiency of 3.84% at 100 mW cm(-2). The stability of the devices for a period of 30 days was also evaluated using sealed cells. The devices assembled with the electrolyte containing less ionic liquid showed to be more stable.
dc.description1
dc.description12
dc.description2870
dc.description2877
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageen
dc.publisherAmer Chemical Soc
dc.publisherWashington
dc.publisherEUA
dc.relationAcs Applied Materials & Interfaces
dc.relationACS Appl. Mater. Interfaces
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectdye-sensitized solar cells
dc.subjectpolymer gel electrolyte
dc.subjectionic liquid
dc.subjectstability
dc.subjectPolycrystalline Tio2 Electrodes
dc.subjectTemperature Molten-salts
dc.subjectFlat-band Potentials
dc.subjectSolid-state
dc.subjectHigh-efficiency
dc.subjectSpectroscopic Determination
dc.subjectRuthenium Sensitizer
dc.subjectOrganic-dyes
dc.subjectPerformance
dc.subjectPhotocurrent
dc.titleElectrochemical and Structural Characterization of Polymer Gel Electrolytes Based on a PEO Copolymer and an Imidazolium-Based Ionic Liquid for Dye-Sensitized Solar Cells
dc.typeArtículos de revistas


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