National Repository of Grey Literature 24 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Fosfosilikátové membrány jako t. prostředek vodíkových palivových článků
Míka, M. ; Klápště, Břetislav ; Michal, J. ; Vondrák, Jiří
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.
Elastické organicko – anorganické membrány s protonovou vodivostí
Míka, M. ; Mašínová, M. ; Švarcová, S. ; Paidar, M. ; Bouzek, K. ; Klápště, Břetislav ; Vondrák, Jiří
A polymeric electrolyte was synthetised and its properties were tested in a laboratory hydrogen – oxygen fuel cell at moderately increased temperature. The poymer is based on organosilicates modified by phosphoric acid.
Dvojvrstva na uhlíku v aprotických elektrolytech
Vondrák, Jiří ; Sedlaříková, M. ; Velická, Jana ; Kocian, Martin ; Špachman, V. ; Klápště, Břetislav
As carbonaceous materials we started with glassy carbon electrodes and continued to use variety pf carbon black powders, carbon nanotubes and chemically modified graphite in powderized form.
Charakterizace protonově vodivých fosfosilikátových membrán pro palivové články H2/O2
Míka, M. ; Mašínová, M. ; Švarcová, S. ; Paidar, M. ; Bouzek, K. ; Klápště, Břetislav ; Vondrák, Jiří
We tested the performance of our membranes in a H2/O2 fuel cell using standard E-TEK electrodes Pt/C under low humidity conditions where the reactant gas streams were not humidified.
Elektrochemická aktivity elektrokatalyzátorů na bázi oxidů manganu a uhlíku
Vondrák, Jiří ; Klápště, Břetislav ; Velická, Jana ; Sedlaříková, M. ; Roche, I. ; Chainet, E. ; Chatenet, M.
New catalysts based on doped manganese oxides for oxygen reduction in fuel cells were prepared. Oxygen reduction reaction in alkaline medium was studied and the catalytical activity of the new material is comparable to the activity of platinum.
Protonově vodivé fosfokřemičitanové membrány
Mika, J. ; Masinová, M. ; Švarcová, S. ; Paidar, M. ; Bouzek, K. ; Klápště, Břetislav ; Vondrák, Jiří
Hybride inorganic-organic membranes with high proton conductivity were prepared and studied. These membranes were used as solid electrolytes in hydrogen chemical sensor and in the model fuel cell.
Impedance elektrody ze skelného uhlíku v PMMA-PC gelových elektrolytech
Vondrák, Jiří ; Velická, Jana ; Klápště, Břetislav
The electrochemical behaviour of the boundary glassy carbon electrode-polymer gel electrolyte was studied.
High proton conducting antimony-pnospate glass
Míka, M. ; Grič, L. ; Vondrák, Jiří ; Klápště, Břetislav
Materials exhibiting hogh proton conductivity can find very attractive applications.
New reference electrode based on PMMA polymer electrolytes
Reiter, Jakub ; Vondrák, Jiří ; Opekar, F. ; Sedlaříková, M. ; Velická, Jana ; Klápště, Břetislav
The research on the field of polymer gel electrolytes is at the border between solid and liquid phase.

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