National Repository of Grey Literature 18 records found  1 - 10next  jump to record: Search took 0.11 seconds. 
Liquid aprotic electrolytes with TiO2 a Al2O3 nanoparticles
Tomeš, Petr ; Krejza, Ondřej (referee) ; Sedlaříková, Marie (advisor)
The first part of this diploma thesis is dealing with conductivity of liquid electrolytes. The second part is about third generation gel electrolytes and thein conductivity. The electrolytes were inorganic salts LiClO4, LiBF4 and NaClO4 in an aprotic propylene carbonate (PC) -used as a solvent. Nanosized Al2O3 and TiO2 particles were, proportionally to the sample's volume, added to the both – blend and gel samples in an amount expressed by weight percentage (wt). Both liquid and gel electrolytes contained following amount on nanosorbent: 3,46% wt, 7,17% wt, 10,0% wt and 12,0% wt. The liquid electrolytes were gelled using commercially available precursor Superacryl (Spofa dental s.r.o.).
Gel polymer electrolytes with nanoparticulars Al2O3
Procházka, Jaroslav ; Krejza, Ondřej (referee) ; Sedlaříková, Marie (advisor)
This work deals with electrolytic conductivity of gel polymer electrolytes. In the theoretical part of the work the methacrylates, the polymerization and the basic outlines of gel polymer electrolytes conductivity are described. The preparation and electrical conductivity of gels based on PMMA are described in the experimental part.
Gel Polymer Electrolytes for Electrochromic Devices
Krejza, Ondřej ; Vondrák, Jiří (advisor)
Předkládaná práce se zabývá výzkumem nových materiálů a metod přípravy gelových polymerních elektrolytů (GPE) na bázi methakrylátů, které lze zejména vzhledem k jejich mechanickým vlastnostem s výhodou využít při konstrukci elektrochromních (EC) prvků.
Aprotic gel polymer electrolytes based on PMMA prepared by various methodes
Kratochvíl, Martin ; Krejza, Ondřej (referee) ; Sedlaříková, Marie (advisor)
This work deals with the preparation and measurement of an ionic conductivity of the gel polymer electrolytes prepared by various methods. In the theoretical part of the work, the types of conducting membranes, the development and the state of the art of the gel polymer electrolytes are summarized. The preparation and the results on ionic conductivity of the gels based on MMA, EMA and EOEMA are discussed in the experimental part.
Gel Polymer Electrolytes for Electrochromic Devices
Krejza, Ondřej ; Vondrák, Jiří (advisor)
Předkládaná práce se zabývá výzkumem nových materiálů a metod přípravy gelových polymerních elektrolytů (GPE) na bázi methakrylátů, které lze zejména vzhledem k jejich mechanickým vlastnostem s výhodou využít při konstrukci elektrochromních (EC) prvků.
Liquid aprotic electrolytes with TiO2 a Al2O3 nanoparticles
Tomeš, Petr ; Krejza, Ondřej (referee) ; Sedlaříková, Marie (advisor)
The first part of this diploma thesis is dealing with conductivity of liquid electrolytes. The second part is about third generation gel electrolytes and thein conductivity. The electrolytes were inorganic salts LiClO4, LiBF4 and NaClO4 in an aprotic propylene carbonate (PC) -used as a solvent. Nanosized Al2O3 and TiO2 particles were, proportionally to the sample's volume, added to the both – blend and gel samples in an amount expressed by weight percentage (wt). Both liquid and gel electrolytes contained following amount on nanosorbent: 3,46% wt, 7,17% wt, 10,0% wt and 12,0% wt. The liquid electrolytes were gelled using commercially available precursor Superacryl (Spofa dental s.r.o.).
Aprotic gel polymer electrolytes based on PMMA prepared by various methodes
Kratochvíl, Martin ; Krejza, Ondřej (referee) ; Sedlaříková, Marie (advisor)
This work deals with the preparation and measurement of an ionic conductivity of the gel polymer electrolytes prepared by various methods. In the theoretical part of the work, the types of conducting membranes, the development and the state of the art of the gel polymer electrolytes are summarized. The preparation and the results on ionic conductivity of the gels based on MMA, EMA and EOEMA are discussed in the experimental part.
Gel polymer electrolytes with nanoparticulars Al2O3
Procházka, Jaroslav ; Krejza, Ondřej (referee) ; Sedlaříková, Marie (advisor)
This work deals with electrolytic conductivity of gel polymer electrolytes. In the theoretical part of the work the methacrylates, the polymerization and the basic outlines of gel polymer electrolytes conductivity are described. The preparation and electrical conductivity of gels based on PMMA are described in the experimental part.
Studium gelových elektrolytů na bázi PMMA a obsahujících ionty Na+ pomocí nukleární magnetické rezonance
Vognar, J. ; Macalík, M. ; Špičák, P. ; Vondrák, Jiří ; Novák, V. ; Krejza, O. ; Bartušek, Karel
Mixture of liquid MMA and PC displays significantly longer relaxation times T1 and T2 than clear solution of NaClO4 in PC. Possibly reason is that the presence of MMA release solvatation of ions Na+ by propylencarbonate.

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