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Catalysts for positive electrode of fuel cells
Novák, V.; Brudná, S.; Vognar, J.; Barath, P.; Vondrák, Jiří; Sedlaříková, M.; Kazelle, J.
2007 - English
The fuel cells belongs to group of derivaces in which is internal energy of the fuel changed into the electrical energy.The electrochemical reaction is representanted by marked peak in half wave potential area.By that method can be found out activity of the electrode which determine potential of inflection point or potential of half-wave. Palivový článek patří do skupiny ve které je termodynamická energie paliva měněna na energii elektrickou.
Keywords:
fuel cells
Available at various institutes of the ASCR
Catalysts for positive electrode of fuel cells
The fuel cells belongs to group of derivaces in which is internal energy of the fuel changed into the electrical energy.The electrochemical reaction is representanted by marked peak in half wave ...
The influence of glass flow chracter on bubble removal in horizontal chancels
Cincibusová, P.; Němec, Lubomír; Jebavá, Marcela
2007 - English
This paper deals with removal of single bubbles in horizontal channels with different character of glass flow. Vliv proudění skloviny v horizontálním kanálu.
Keywords:
glass melt; growing bubble; fining channel
Available at various institutes of the ASCR
The influence of glass flow chracter on bubble removal in horizontal chancels
This paper deals with removal of single bubbles in horizontal channels with different character of glass flow.
Vliv proudění skloviny v horizontálním kanálu.
Methacrylate-based polymer electrolytes for electrochromic devices
Krejza, O.; Reiter, Jakub; Vondrák, Jiří
2007 - English
Poly(ethyl methacrylate) and poly(2-ethoxyethylmethacrylate) polymer electrolytes with embedded aprotic solvents (carbonates) and lithium perchlorate and lithium bis(oxalato)borate were tested in electrochromic devices and lithium-ion batteries. Byly připraveny polymerní elektrolyty na bázi poly(ethyl methakrylátu) a poly(2-ethoxyethyl methakrylátu) s ukotvenými roztoky lithných solí v aprotických rozpouštědlech (karbonáty) a testovány v elektrochromních zařízeních a lithno-iontových bateriích.
Keywords:
lithium-ion batteries
Available at various institutes of the ASCR
Methacrylate-based polymer electrolytes for electrochromic devices
Poly(ethyl methacrylate) and poly(2-ethoxyethylmethacrylate) polymer electrolytes with embedded aprotic solvents (carbonates) and lithium perchlorate and lithium bis(oxalato)borate were tested in ...
MnO2 studied by EQGM
Špičák, P.; Svoboda, V.; Sedlaříková, M.; Vondrák, Jiří; Kazelle, J.
2007 - English
Mass changes of electrodes containing MnO2 during charging and discharging processes were studied using QCMB techniques. The process is accompanied by reversible uptake of water and insertion of H3O+ insted of H+ should be expected. Pomocí QCMB byly studovány změny hmotnosti při nabíjení a vybíjení elektrod obsahujících MnO2. Redukce těchto elektrod je provázena vratnou sorbcí vody a lze předpokládat, že probíhá jako inserce iontů H3O+ a nikoli protonů H+.
Keywords:
EQCM
Available at various institutes of the ASCR
MnO2 studied by EQGM
Mass changes of electrodes containing MnO2 during charging and discharging processes were studied using QCMB techniques. The process is accompanied by reversible uptake of water and insertion of H3O+ ...
Progress in research of aprotic gel polymer electrolytes in Czechia
Vondrák, Jiří; Sedlaříková, M.; Krejza, O.; Velická, Jana
2007 - English
The progress of research of gel polymer electrolytes based on polymethacrylates and propylene carbonate is described. The electric conductivity and selected electrochemical processes in them is the main research field. Přehled výzkumu polymerních gelových elektrolytů. Studovány jsou elektrolyty na bázi polymerních methakrylátů a propylenkarbonátu především z hlediska elektrické vodivosti a vybraných elektrochemických procesů.
Keywords:
solid and polymeric conductors
Available at various institutes of the ASCR
Progress in research of aprotic gel polymer electrolytes in Czechia
The progress of research of gel polymer electrolytes based on polymethacrylates and propylene carbonate is described. The electric conductivity and selected electrochemical processes in them is the ...
Graphite electrode for Li-ion batteries
Makovička, J.; Sedlaříková, M.; Vondrák, Jiří
2007 - English
The results illustrate that the expanded graphote is a promising candidate for Li-ion batteries but irreversible capacity in the cycle has to be decreased. Grafitové elektrody jsou perspektivní pro Li-iontové články.
Keywords:
Li-ion batteries
Available at various institutes of the ASCR
Graphite electrode for Li-ion batteries
The results illustrate that the expanded graphote is a promising candidate for Li-ion batteries but irreversible capacity in the cycle has to be decreased....
Kinetic properties of MnO2 based positive electrode with different dopants
Vognar, J.; Brudná, S.; Novák, V.; Vondrák, Jiří; Sedlaříková, M.
2007 - English
The present study aims at evaluating the activity of such manganise oxide-based electrocatalysts toward the ORR. Electrochemical measurement was realized by method of cyclic voltametry on RDE in three electrodes circuit. Elektrochemické měření bylo realizováno metodou cyklického voltametru na RDE v tří elektrodovém okruhu.
Keywords:
fuell cell
Available at various institutes of the ASCR
Kinetic properties of MnO2 based positive electrode with different dopants
The present study aims at evaluating the activity of such manganise oxide-based electrocatalysts toward the ORR. Electrochemical measurement was realized by method of cyclic voltametry on RDE in ...
HOR NiOx as elektrocatalysts for fuel cells H2-O2
Barath, P.; Sedlaříková, M.; Vondrák, Jiří; Chatenet, M.; Roche, I.
2007 - English
Ni Ni/C and Raney Ni materials were studied as electrocatalysts for the HOR in alkaline medium. Ni/C a Raneyův Ni byly studovany jako elektrokatalyzátory HOR v alkalickém médiu.
Keywords:
fuell cells
Available at various institutes of the ASCR
HOR NiOx as elektrocatalysts for fuel cells H2-O2
Ni Ni/C and Raney Ni materials were studied as electrocatalysts for the HOR in alkaline medium.
Ni/C a Raneyův Ni byly studovany jako elektrokatalyzátory HOR v alkalickém médiu.
Alpha nickel hydroxide stability in dependence on electrolyte concentration
Vrbický, J.; Vondrák, Jiří; Sedlaříková, M.
2007 - English
Alpha nickel hydroxide is stable in normal conditions, but in alkaline electrolytes is unstable. Alfa-Ni(OH)2 je stálý v normálních podmínkách, ale v alkalických elektrolytech je nestabilní.
Keywords:
electrolytes
Available at various institutes of the ASCR
Alpha nickel hydroxide stability in dependence on electrolyte concentration
Alpha nickel hydroxide is stable in normal conditions, but in alkaline electrolytes is unstable.
Alfa-Ni(OH)2 je stálý v normálních podmínkách, ale v alkalických elektrolytech je nestabilní.
The bubble removal from glass melts in a rotating cylinder
Tonarová, V.; Němec, Lubomír; Jebavá, Marcela
2007 - English
The goal of this work is to present results of the matematical modeling of bubble behaviour in the centrifugal field. Cíl této práce je prezentovat výsledky matematického modelování bublin v odstředivém poli.
Keywords:
glass melt; centrifugal force; fining cylinder
Available at various institutes of the ASCR
The bubble removal from glass melts in a rotating cylinder
The goal of this work is to present results of the matematical modeling of bubble behaviour in the centrifugal field....
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