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The focus of this work is on the modelling of the degradation behaviour of conventional lithium-ion cells with graphite/NMC electrodes in conjunction with electrolytes based on LiPF6 in organic solvents. The potential for improvements of parameterization methods dealing with physical-chemical aging effects and simulation studies for optimization of the battery lifetime is shown. In the process of model parameterization mostly data-based as well as non-invasive analysis methods are used.

Mechanical engineering & materials --- Lithium-Ionen-Zelle --- Batterie --- Elektrofahrzeug --- Degradationsmechanismen --- Lebensdauerprädiktion --- lithium-ion cell --- battery --- electric vehicle --- degradation mechanism --- lifetime prediction

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This contribution presents an analytical and a numerical model for predicting the effective thermal conductivity of porous electrode coatings as a function of microstructure parameters. Both models account for the morphological parameters and the thermal bulk materials of the constitutive cell components. The results of both models have been successfully verified against each other and validated with literature data as well as own experimental measurements.

Mechanical engineering & materials --- thermal conductivity --- thermal transport properties --- porous electrodes --- lithium-ion cell --- lithium-ion battery --- Wärmeleitfähigkeit --- thermische Transporteigenschaften --- poröse Elektroden --- Lithium-Ionen Zelle --- Lithium-Ionen Batterie