National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Low temperature fuel cells
Skibik, Petr ; Barath, Peter (referee) ; Sedlaříková, Marie (advisor)
This work deals with making of catalyst materials with used nickel and commercial carbons that is appropriate for using in low temperature H2-O2 fuel cell. This thesis is described the methods of preparation electrode materials, its consistence and making electrode for the measure. This thesis is compared catalyst activity of nickel materials with platinum materials and poor commercial carbons. The samples were measured by voltammetric method by potentiostat Autolab with used the software GPES and the software FRA for impedance spectroscopy.
Utilization of electrochemically induced cleavage of various sulfonimides
Salvadori, Karolína
In this work, we describe the unexpected electrochemical cleavage of sulfonimides, providing a direct pathway to corresponding sulfonamides. For this purpose, 16 substances were synthesized and tested, reflecting the influence of different electron effects of -SO2Ph-R substituents, and the impact of the number of nosyl units present in molecules. In the case of octakis-nosylated calixarenes, the electrochemical cleavage via direct potential-controlled electrolysis was compared with conventional organic synthetic procedures. After electrolysis, all prepared sulfonamides were isolated in excellent yields.
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Low temperature fuel cells
Skibik, Petr ; Barath, Peter (referee) ; Sedlaříková, Marie (advisor)
This work deals with making of catalyst materials with used nickel and commercial carbons that is appropriate for using in low temperature H2-O2 fuel cell. This thesis is described the methods of preparation electrode materials, its consistence and making electrode for the measure. This thesis is compared catalyst activity of nickel materials with platinum materials and poor commercial carbons. The samples were measured by voltammetric method by potentiostat Autolab with used the software GPES and the software FRA for impedance spectroscopy.

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