<p>U ovoj doktorskoj disertaciji ispitivani su elektroliti na bazi jonskih tečnosti pogodni za<br />primenu u litijum jonskim baterijama. Fizičko-hemijska svojstva binarnih smeša<br />jonskih tečnosti sa dicijanamidnim i bis(trifluorometilsulfonil)imidnim anjonima i<br />molekulskih rastvarača ispitana su u celom opsegu molskih udela i na različitim<br />temperaturama. Na osnovu izmerenih gustina, viskoznosti i električne provodljivosti<br />izračunati su različiti fizičko hemijski parametri i diskutavne interakcije između komponenata smeša. Ispitana je termička i elektrohemijska stabilnost odabranih<br />elektrolita. Dodatkom litijumove soli u odabrane binarne smeše dobijeni su ternarni<br />sistemi koji su okarakterisani u zavisnoti od koncentracije litijumove soli. Odabrani<br />elektroliti upotrebljeni su za ispitivanje performansi litijum jonske ćelije sa anatas<br />TiO2 nanotubularnim elektrodama.Cikličnom voltametrijom i galvanostatskim<br />cikliranjem su ispitane performanse ćelije u toku 150 ciklusa punjenja i pražnjenja. Na<br />osnovu ciklovoltametrijskih merenja izračunati su koeficijenti difuzije i energija aktivacije za difuziju.</p> / <p>In this doctoral dissertation, Ion liquid-based electrolytes were tested for use in lithium-ion batteries. The physicochemical properties of binary mixtures of ionic liquids with dicyanamide and bis (trifluoromethylsulfonyl) imide anions and molecular solvents were examined throughout the range of molar proportions and at different temperatures. Based on the measured densities, viscosity and electrical conductivity, various physical chemical parameters and discrete interactions between the components of the mixture are calculated. Thermal and electrochemical stability of selected electrolytes was examined. By addition of lithium salt to the selected binary mixtures, ternary systems were characterized which were characterized by the concentration of lithium salt. The selected electrolytes were used to test the performance of the lithium-ion cell with anatomic TiO2 nanotubular electrodes. Cyclic voltammetry and galvanostatic cycling tested the cell's performance during the 150 charge and discharge cycles. Based on cyclotoltametric measurements, the diffusion coefficients and activation energies for diffusion were calculated.</p>
| Identifer | oai:union.ndltd.org:uns.ac.rs/oai:CRISUNS:(BISIS)104989 |
| Date | 08 November 2017 |
| Creators | Zec Nebojša |
| Contributors | Gadžurić Slobodan, Vaštag Đenđi, Vraneš Milan, Cvjetićanin Nikola, Marija Bešter Rogač |
| Publisher | Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, University of Novi Sad, Faculty of Sciences at Novi Sad |
| Source Sets | University of Novi Sad |
| Language | Serbian |
| Detected Language | Unknown |
| Type | PhD thesis |
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