Lithium-ion batteries show various degradation phenomena during charge and discharge. In this thesis, we tackle the oxidative decomposition of battery components in high-voltage cells, and place a particular emphasis on gassing reactions and the role of contaminants. We employ On-line Electrochemical Mass Spectrometry, a novel technique for gas analysis in lithium-ion cells, and combine it with our unique two-compartment battery test cell, which enables the independent analysis of reactions at anode and cathode.
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Lithium-ion batteries show various degradation phenomena during charge and discharge. In this thesis, we tackle the oxidative decomposition of battery components in high-voltage cells, and place a particular emphasis on gassing reactions and the role of contaminants. We employ On-line Electrochemical Mass Spectrometry, a novel technique for gas analysis in lithium-ion cells, and combine it with our unique two-compartment battery test cell, which enables the independent analysis of reactions at a...
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