|
|
Gel polymer electrolytes with nanoparticles
Szotkowski, Radek ; Sedlaříková, Marie (referee) ; Jahn, Michal (advisor)
This master‘s thesis concerns gel polymer electrolytes formed on a methyl methacrylate base with selected types of nanoparticles. In the thesis are also analyzed the methods for measuring electrochemical properties. The practical portion deals with sample preparations of gel polymer electrolytes with different contents of alkaline salt in a solvent, creating gels with different nanoparticle content and comparing gel polymer electrolytes polymerized with heat and UV radiation. The thesis deals with the evaluation of these samples from the viewpoint of electrical conductivity and potential windows as well as thermal analysis of selected samples.
|
|
|
Mobile germicidal source
Procházka, Michal ; Murina, Milan (referee) ; Steinbauer, Miloslav (advisor)
Germicidal light is a type of UV light which is able to kill bacteries and microorganisms. These germicidal lamps usually operate on the same principle like common fluorescent lamps but they emit the different spectra. For higher efficiency and longer lamp life it is desirable to use electronic ballast as a source for germicidal lamp which in version of integrated circuit offers further advantages. First part of the thesis describes the theory of UV desinfection and electronic ballasts. The second part is about the construction of the mobile germicidal source. In the last part of the thesis there is the germicidal mobile source tested against a few various mildews.
|
|
|
IoT air monitoring
Kousal, Martin ; Povalač, Aleš (referee) ; Frýza, Tomáš (advisor)
The purpose of this bachelor work is to make a device that can measure air quality parameters and send them wirelessly to the server, where that measured data are processed and then shown to the user. The aim is to create a device with the lowest possible power consumption for the possibility of battery operation.
|
|
|
IoT air monitoring
Kousal, Martin ; Povalač, Aleš (referee) ; Frýza, Tomáš (advisor)
The purpose of this bachelor work is to make a device that can measure air quality parameters and send them wirelessly to the server, where that measured data are processed and then shown to the user. The aim is to create a device with the lowest possible power consumption for the possibility of battery operation.
|
|
|
Gel Polymer Electrolytes Based On MMA With Ionic Liquids
Jahn, Michal
Gel polymer electrolytes are perspective electrolytes for new types of Li-ion batteries today. The properties respectively advantages of these gels can be used also in other fields of electrochemistry. Very promising combination can be electrochemically stable polymers and ionic liquids, which are substances that consist of an organic cation and an inorganic or organic anion, with a melting point below 100 °C. Main advantages of ionic liquids are high ionic conductivity, inflammability and excellent electrochemical stability. These ionic liquids may be suitable for new lithiumion batteries and supercapacitors, especially where the required higher thermal stability. In this paper, I will present fundamental characteristics of gel polymer electrolytes with ionic liquids.
|
|
|
Gel Polymer Electrolytes for Use in Lithium-ion Batteries
Jahn, Michal
Gel polymer electrolytes are perspective electrolytes for new types of Li-ion batteries today. The properties respectively advantages of these gels can be used also in other fields of electrochemistry. The gel polymer electrolyte is composed of a conductive component (liquid electrolyte) and the polymer component (methacrylate). In this paper I present fundamental characteristics of gel polymer electrolytes. This paper presents a principle of gel polymer electrolytes, fundamental measurement and their evaluation. I present the techniques of measurement and preparation of this gel polymer materials. Potentiostatic impedance, linear sweep voltammetry, cyclic voltammetry and galvanostatic charge/discharge techniques were used for characterization of the samples.
|
|
|
Gel polymer electrolytes with nanoparticles
Szotkowski, Radek ; Sedlaříková, Marie (referee) ; Jahn, Michal (advisor)
This master‘s thesis concerns gel polymer electrolytes formed on a methyl methacrylate base with selected types of nanoparticles. In the thesis are also analyzed the methods for measuring electrochemical properties. The practical portion deals with sample preparations of gel polymer electrolytes with different contents of alkaline salt in a solvent, creating gels with different nanoparticle content and comparing gel polymer electrolytes polymerized with heat and UV radiation. The thesis deals with the evaluation of these samples from the viewpoint of electrical conductivity and potential windows as well as thermal analysis of selected samples.
|
|
|
Mobile germicidal source
Procházka, Michal ; Murina, Milan (referee) ; Steinbauer, Miloslav (advisor)
Germicidal light is a type of UV light which is able to kill bacteries and microorganisms. These germicidal lamps usually operate on the same principle like common fluorescent lamps but they emit the different spectra. For higher efficiency and longer lamp life it is desirable to use electronic ballast as a source for germicidal lamp which in version of integrated circuit offers further advantages. First part of the thesis describes the theory of UV desinfection and electronic ballasts. The second part is about the construction of the mobile germicidal source. In the last part of the thesis there is the germicidal mobile source tested against a few various mildews.
|
|
| |
guest ::
