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A Study of Phenomena that Limit the Life-Span of Ni-Zn Secondary Cells
Chladil, Ladislav ; Oriňáková,, Renáta (referee) ; Vanýsek,, Petr (referee) ; Novák, Vítězslav (advisor)
This dissertation is focused on the study of selected additives and their effect on positive and negative electrodes of Ni-Zn secondary cells. The first group of additives consists of the inorganic compounds that reduce zinc oxide solubility and thus prevents shape changes of the zinc electrode. The second group contains organic additives that have the beneficial effect of dendrite growth prevention. All additives were examined in relationship to their compatibility with the positive electrode and to their effect on the zinc electrode dendrites inhibition, hydrogen evolution and corrosion inhibition. Moreover, the study of decomposition kinetics of supersaturated zincate solution with the first group of additives was performed. Finally, a short study of pulse regime charging mode with regard to dendrites inhibition was performed and evaluated.
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A Study of Phenomena that Limit the Life-Span of Ni-Zn Secondary Cells
Chladil, Ladislav ; Oriňáková,, Renáta (referee) ; Vanýsek,, Petr (referee) ; Novák, Vítězslav (advisor)
This dissertation is focused on the study of selected additives and their effect on positive and negative electrodes of Ni-Zn secondary cells. The first group of additives consists of the inorganic compounds that reduce zinc oxide solubility and thus prevents shape changes of the zinc electrode. The second group contains organic additives that have the beneficial effect of dendrite growth prevention. All additives were examined in relationship to their compatibility with the positive electrode and to their effect on the zinc electrode dendrites inhibition, hydrogen evolution and corrosion inhibition. Moreover, the study of decomposition kinetics of supersaturated zincate solution with the first group of additives was performed. Finally, a short study of pulse regime charging mode with regard to dendrites inhibition was performed and evaluated.
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The Theoretical Background of Neuronal Networks
ROKŮSEK, Zdeněk
In focus of this dissertation is the theoretical background of the neural networks with a description of basic models of these neural networks and their application in practice. Furthermore, this work provides a concise historical overview of the exploration on field of the neural calculations. It also clarifies neuro-physiological motivation that conducts to the mathematical model of the neuron just like the neural networks. The number of options of neural networks and ways how to apply them is high. The neural networks can be used to define figures or to compress data, and so on. Among the most familiar models of a neural network is the multilayer neural network, the model of MADALINE, the associative network or the Hopfield´s network.
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