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Modification of cathode material based on nickel and manganese for Li-ion cell
Bukáčková, Ivana ; Vondrák, Jiří (referee) ; Kazda, Tomáš (advisor)
This bachelor´s thesis deals with cathode materials for lithium batteries with cell voltage approaching 5V. The first part of the thesis is devoted to the characteristics of Li-ion batteries, electrochemical reactions and properties of electrode materials. She also pays attention to the preparation and measurement of materials LiNi0,5Mn1,5O4, LiNi0,45Mn1,55O4 and LiNi0,55Mn1,45O4. Observed material was measured by electron microscopy, elemental analysis and galvanostatic method,
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Electrode materials based on lithium titanate oxide for lithium-ions accumulators
Kaválek, Ondřej ; Vondrák, Jiří (referee) ; Jirák, Tibor (advisor)
The bachelors thesis deals with researching electrode materials based on Li4Ti5O12 for lithium-ions accumulators. The work is divided into two areas – teoretical and practical part. Teoretical part is aimed at electrochemical power sources with focusing on lithium-ions accumulators. Consenquetial part is concentrated on electrochemical processes and analysis of researching samples Li4Ti5O12. Observed material was measured by galvanostatic method, cyclic voltammetry, impedance spectroskopy and electron microscopy. Aim of the work was obtaining characteristics of electrode material and finding out usability of the material in lithium-ions accumulators.
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Study of stability of electrolytes and electrodes by electrochemical methods
Bukáčková, Ivana ; Čech, Ondřej (referee) ; Kazda, Tomáš (advisor)
This master´s thesis deals with stability of electrolytes and electrodes using electrochemical methods of Li-ion batteries. The first part of the project is devoted to the characteristics of Li-ion batteries, electrochemical reactions and characteristics of electrode materials. Consenquetial part is concentrated on preparation and measurement of elektrolyte EC : DMC with 1M LiPF6. The elektrolyte was investigated using galvanostatic method, cyclic voltammetry and impedance spectroscopy.
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Study of stability of electrolytes and electrodes by electrochemical methods
Bukáčková, Ivana ; Čech, Ondřej (referee) ; Kazda, Tomáš (advisor)
This master´s thesis deals with stability of electrolytes and electrodes using electrochemical methods of Li-ion batteries. The first part of the project is devoted to the characteristics of Li-ion batteries, electrochemical reactions and characteristics of electrode materials. Consenquetial part is concentrated on preparation and measurement of elektrolyte EC : DMC with 1M LiPF6. The elektrolyte was investigated using galvanostatic method, cyclic voltammetry and impedance spectroscopy.
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Modification of cathode material based on nickel and manganese for Li-ion cell
Bukáčková, Ivana ; Vondrák, Jiří (referee) ; Kazda, Tomáš (advisor)
This bachelor´s thesis deals with cathode materials for lithium batteries with cell voltage approaching 5V. The first part of the thesis is devoted to the characteristics of Li-ion batteries, electrochemical reactions and properties of electrode materials. She also pays attention to the preparation and measurement of materials LiNi0,5Mn1,5O4, LiNi0,45Mn1,55O4 and LiNi0,55Mn1,45O4. Observed material was measured by electron microscopy, elemental analysis and galvanostatic method,
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Electrode materials based on lithium titanate oxide for lithium-ions accumulators
Kaválek, Ondřej ; Vondrák, Jiří (referee) ; Jirák, Tibor (advisor)
The bachelors thesis deals with researching electrode materials based on Li4Ti5O12 for lithium-ions accumulators. The work is divided into two areas – teoretical and practical part. Teoretical part is aimed at electrochemical power sources with focusing on lithium-ions accumulators. Consenquetial part is concentrated on electrochemical processes and analysis of researching samples Li4Ti5O12. Observed material was measured by galvanostatic method, cyclic voltammetry, impedance spectroskopy and electron microscopy. Aim of the work was obtaining characteristics of electrode material and finding out usability of the material in lithium-ions accumulators.
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