[PEI–SiO2]:[LiTFSI] nanocomposite polymer electrolytes:Ion conduction and optical properties
| Autor: | Roser Marsal, Ilknur Bayrak Pehlivan, Claes-Göran Granqvist, Peter Georén, Gunnar A. Niklasson |
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| Rok vydání: | 2012 |
| Předmět: |
Nanocomposite
Materials science Renewable Energy Sustainability and the Environment Analytical chemistry Nanoparticle chemistry.chemical_element Conductivity Thermal conduction Surfaces Coatings and Films Electronic Optical and Magnetic Materials Ion Wavelength chemistry Polymer chemistry Lithium Electrical conductor |
| Zdroj: | Solar Energy Materials and Solar Cells. 98:465-471 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2011.11.021 |
| Popis: | Ion conductivity and optical properties were investigated for polymer electrolytes based on poly (ethyleneimine) and lithium bis(trifluoromethylsulfonyl)imide and also containing up to 9 wt.% of 7-nm-diameter SiO2 nanoparticles. The [N]:[Li] molar ratio was kept constant at 50:1. Impedance measurements were performed in the frequency range 10−2–107 Hz and between the temperatures 20 and 70 °C with an applied ac voltage of 1 V. Spectrophotometric data of total and diffuse transmittance were taken between the wavelengths 300 and 2500 nm. The bulk impedance was fitted to a conductive Havriliak-Negami circuit model. The ion conductivity increased monotonically for increasing SiO2 contents; specifically its room temperature value went from 8.5×10–7 S/cm without nanoparticles to 3.8×10–5 S/cm for 8 wt.% of SiO2 while the diffuse transmittance remained at ∼1% so that optical clarity prevailed. |
| Databáze: | OpenAIRE |
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