"ABA Brno 2001 /2./" - Výsledky hledání - Digitální repozitář

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	Rotating disk electrode for measuring electrocatalyst materials Vondrák, Jiří ; Sedlaříková, M. ; Coural, D. In this work we investigated the oxygen reduction on various catalytic materials by means of the rotating disc electrode (RDE). Potentiostat AUTOLAB and the RDE Orion were used for this work. Electrodes made of Pt, Au, Ag and GC (glassy carbon) served or testing electrocatalytic materials in 2M KOH. Rotation speed varied from 3000 to 600 rpm with in lineraly distributed nine steps. Úplný záznam
	Basic properties of electrochemical supercapacitors Vondrák, Jiří ; Sedlaříková, M. ; Novák, V. ; Nečesal, P. ; Černý, R. The fundamental properties of two kinds of supercapacitors was investigated. Two different samples were obtained. One is capacitor STAR of nominal value 7 F and the other ULTRA was nominal capacity 100 F. Linear voltammetry, self-discharge curves, and indepedance spectroscopy was used for monitoring their properties. Úplný záznam
	Lithium ion batteries Sedlaříková, M. ; Vondrák, Jiří ; Nečesal, P. ; Rozsívalová, Z. Lithium ion batteries are the most promising accumulators from the viewpoint of specific energy. Their both electrodes are of intercalation type. Thus, their charge-discharge process is not accompanied by any change of electrolyte. Graphite is used as the material of negative electrodes while the positive electrodes are made from transition metal oxides such as manganese MnO2-x. Úplný záznam
	Electrochemical properties of PMMA-PC gels containing cadmium salts Vondrák, Jiří ; Reiter, Jakub ; Sedlaříková, M. ; Bartušek, Karel ; Novák, V. ; Nováček, X. We have described the preparation and properties of PMMA-PC gel polymer electrolytes containing lithium salts, tetraethylamonium salts and salts of Na, Mg, and Zn. Úplný záznam
	Voltammetric measurement of the Pt electrode capacity and the determination of the polyvalent ions diffusion coefficients in the glass melt Rohanová, D. ; Vondrák, Jiří The temperature dependence of diffusion coefficients of the polyvalent ions (iron and chromium)is one of characteristic structure parameters in given glass melt. The new voltammetry arrangement with triangular shape of the potential and the three-elec Úplný záznam
	Lithium glasses exhibiting increased ionic conductivity Míka, M. ; Šmíd, P. ; Vondrák, Jiří ; Klápště, Břetislav Fast ion-conducting solids represent interesting materials that can be used for the development of various electrochemical solid-state devices such as batteries, chemical sensors and electrochromic devices. One of the promising materials is an ion-con ting glass that could serve in these advanced devices as a solid electrolyte or electrode. Úplný záznam
	Thermodynamics and digital simulation of intercalation processes Vondrák, Jiří ; Reiter, Jakub ; Sedlaříková, M. ; Novák, V. The thermodynamic theory of reversible electrochemical intercalation reactions is based on the consideration of interaction energy between two neighbouring sites. Úplný záznam

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