National Repository of Grey Literature 173 records found  beginprevious21 - 30nextend  jump to record: Search took 0.06 seconds. 
Stabilization effect of magnesium aditives in nickel hydroxide
Vrbický, J. ; Vondrák, Jiří ; Sedlaříková, M.
The capacity and stability of magnesium substituted alpha-Ni(OH)2 were investigated. Magnesium has no effect on nickel hydroxide electrochemical capacity. The effect of magnesium on stability is very low, the magnesium improves stability a little, but not more than 10 percent. This effects are not useable in commerce production.
The development of electrode materials for PEM fuel cell
Kazda, T. ; Novák, V. ; Barath, Peter
This work deals with creating a micture of carbon deposited platinum.Furthermore measurement of these mixtures with using the methods Impedance Spectroscopy and Linear scan voltametry and then compare the identified characteristics of follows the measured samples.
Microstructure and performance of titanium oxide coatings sprayed by oxygen-acetylene flame
Ctibor, Pavel ; Štengl, Václav ; Zahálka, F. ; Murafa, Nataliya
TiO2 nano-powders were agglomerated by a spray drying process for applying to thermal spraying. A conventional oxygen-acetylene flame torch was used to deposit porous partially nanostructured TiO2 coatings. Steel substrates were used as a support for tested samples. Scanning Electron Microscopy, X-ray microanalysis and X-ray diffraction were performed to study the morphology and the crystalline phases of the titania coatings. Optical bandgap and kinetics of the acetone decomposition was studied too. The best results were obtained for the powder which is available as a commercial spray feedstock. This powder seems to be most resistant against the reducing atmosphere in the jet of combustive gasses.
Antibakteriální účinek Ag vrstev nanesených na vnitřní povrch PVC hadic
Krýsa, J. ; Šubrt, Jan ; Balcarová, J.
Jedním z problémů je tvorba biofilmů na neozářených vnitřních površích PVC hadic, kterými cirkuluje voda mezi bazénem a filtrační a fotokatalytickou čisticí jednotkou.
Conductivity of carbon materials for alternative energy sources
Tichý, J. ; Novák, V. ; Barath, Peter
Object of this work was prepared electrodes with carbon materials and investigate their electrical properties.
News concerning gel polymer electrolytes
Sedlaříková, M. ; Vondrák, Jiří ; Macalík, M.
Gel polymer electrolytes based on PMMA and aprotic solvents have been studied for a long time in our laboratory.
Electrolyzer for hydrogen production
Kunovjánek, M. ; Vondrák, Jiří ; Sedlaříková, M.
Purpose of this work was to create galvanic deposition of metals with electrocatalytic properties.
Thermal properties of sulfolane
Sedlaříková, M. ; Vondrák, Jiří ; Zatloukal, M.
The properties of CL as aprotic and highly polar solvent are promising for many applications.
Sodium used instead of lithium in the electrochromic devices
Svoboda, V. ; Kazelle, J. ; Vondrák, Jiří ; Sedlaříková, M.
The mass of thin layer can be observed by the EQCM method. This method is based on the changes of the resonance frequency of a quartz crystal resonator.

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