The main goal is to develop an optimized three-dimensional (3D) cell design with improved electrochemical properties,
which can be correlated to a characteristic lithium distribution along 3D micro-structures at different State-of-Health
(SoH). 3D elemental mapping was applied for characterizing the whole electrode as function of SoH. It was
demonstrated that fs-laser generated 3D architectures improves the battery performance regarding battery power and lifetime.
It was quantitatively shown by laser-induced breakdown spectroscopy that 3D architectures act as attractor for
lithium-ions. Furthermore, lateral intrinsic porosity variations were identified to be possible starting points for lithium
plating and subsequent cell degradation. Results achieved from post-mortem studies of cells with laser structured
electrodes (intrinsic and artificial porosity variation), and unstructured lithium-nickel-manganese-cobalt-oxide electrodes
will be presented.