No (264)
Yes (3)
Number of found documents:
267
Published from
to
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....
Nanotubes as admixture for positive electrode in Li-ion batteries
Sysel, M.; Makovička, J.; Sedlaříková, M.; Vondrák, Jiří
2007 - English
Active mass for positive electrode of Li-ion batteries should be improved by carbon particles for enhancement of electrical conductivity. Carbon nanotubes were tested for this purpose. Aktivní hmota pro kladnou elektrodu Li-iontové baterie se zlepšuje přídavkem uhlíkových částic s cílem zvýšení elektronové vodivosti. K tomuto účelu byly zkoušeny uhlíkové nanotrubice.
Keywords:
Li-ion batteries
Available at various institutes of the ASCR
Nanotubes as admixture for positive electrode in Li-ion batteries
Active mass for positive electrode of Li-ion batteries should be improved by carbon particles for enhancement of electrical conductivity. Carbon nanotubes were tested for this purpose....
Manganese and nickel additives for electrode materials of lithium-ion batteries
Jirák, T.; Vondrák, Jiří; Sedlaříková, M.; Hejátková, E.
2007 - English
The properties of electrode material based on LiCoO2 were modified by substitution of cobalt by Ni and/or Mn compounds. Specific energy of new material was lower, but their lifetime (number of cycles) was improved. Vlastnosti elektrodového materiálu na bázi LiCoO2 byly zlepšovány substitucí kobaltu sloučeninami Ni a Mn. Měrná energie těchto elektrod se snižuje, ale životnost při cyklování je lepší.
Keywords:
Li-ion batteries
Available at various institutes of the ASCR
Manganese and nickel additives for electrode materials of lithium-ion batteries
The properties of electrode material based on LiCoO2 were modified by substitution of cobalt by Ni and/or Mn compounds. Specific energy of new material was lower, but their lifetime (number of cycles) ...
Multiwall carbon nanotubes as negative electrode for Li-ion batteries
Zabloudil, M.; Makovička, J.; Sedlaříková, M.; Vondrák, Jiří
2007 - English
Multiwall carbon nanotubes (Aldrich) were tested as anodes for Li-ion batteries with reached specific capacity 100 mAh/g. Uhlíkové nanotrubice s mnoha stěnami (Aldrich) byly testovány za podmínek činnosti v Li-iontových bateriích jako materiály pro zápornou elektrodu. Byly dosaženy specifické kapacity řádu 100 mAh/g.
Keywords:
Li-ion batteries
Available at various institutes of the ASCR
Multiwall carbon nanotubes as negative electrode for Li-ion batteries
Multiwall carbon nanotubes (Aldrich) were tested as anodes for Li-ion batteries with reached specific capacity 100 mAh/g....
Influence of SnO2 substrate type on WO3 electrochemical properties
Macalík, M.; Vondrák, Jiří; Sedlaříková, M.; Mohleníková, J.
2007 - English
The use of SnO2 electrically conductive layers prepared either by vacuum deposition or by spray pyrolysis was tested as support for electrochromic layers WO3. Vacuum deposited electrode exhibited better transparency, while the performance of chemically deposited electrodes was quite sufficient. Byly zkoušeny elektricky vodivé vrstvy SnO2 jednak napařované ve vakuu, jednak připravené sprejovou pyrolýzou jako podložky pod elektrochromní vrstvy WO3. Ptůhlednost vakuově nanášených elektrod je velmi dobrá, ale činnost elektrod nanášených sprejovou metodou je dostačující.
Keywords:
intercalation materials
Available at various institutes of the ASCR
Influence of SnO2 substrate type on WO3 electrochemical properties
The use of SnO2 electrically conductive layers prepared either by vacuum deposition or by spray pyrolysis was tested as support for electrochromic layers WO3. Vacuum deposited electrode exhibited ...
Phosphosilicate mambranes for a medium temperature H2/O2 fuell cell
Míka, M.; Klápště, Břetislav; Michal, J.; Vondrák, Jiří
2007 - English
Increasing consumption of electric energy and its rising cost initiated an search for new technologies that can produce the energy more effectively and environment friendly. Zvýšení spotřeby elektrické energie a jehích rostoucích nákladů podnítilo pátrní po nových technologiích, které mohou produkovat energii efektivněji a s ohledem na životní prostředí.
Keywords:
membranes; fuell cell
Available at various institutes of the ASCR
Phosphosilicate mambranes for a medium temperature H2/O2 fuell cell
Increasing consumption of electric energy and its rising cost initiated an search for new technologies that can produce the energy more effectively and environment friendly....
Material based in LiCoO2 doped by alkali metals for positive electrodes of secondary lithium batteries
Jirák, T.; Sedlaříková, M.; Vondrák, Jiří; Makovička, J.; Polsterová, H.
2006 - English
Obtained results allow the application of prepared materials in modern chemical power sources. The quaternary systems containing lithium salts will be studied as solid electrolytes in lithium-ion batteries and the ternary systems will be combined with carbon powders of high surface area to form supercapacitors. Popis nových výsledků získaných na materiálech vyvinutých v UACH a UETE.
Keywords:
lithium polymer electrolytes
Available at various institutes of the ASCR
Material based in LiCoO2 doped by alkali metals for positive electrodes of secondary lithium batteries
Obtained results allow the application of prepared materials in modern chemical power sources. The quaternary systems containing lithium salts will be studied as solid electrolytes in lithium-ion ...
Electrolytes for the electrochemical supercapacitors
Přikryl, M.; Kocian, Martin; Sedlaříková, M.; Vondrák, Jiří; Hajátková, E.; Mohelníková, J.
2006 - English
These components have wide applications in the presents industrial world because of their properties. Studován vliv složení různých komponent elektrolytů na jejich vlastnosti.
Keywords:
supercapacitors; electrolytes
Available at various institutes of the ASCR
Electrolytes for the electrochemical supercapacitors
These components have wide applications in the presents industrial world because of their properties.
Studován vliv složení různých komponent elektrolytů na jejich vlastnosti.
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