Mechanics of large-format Li-ion cell with attenuation-based- and diffraction-CT

The inner mechanics of large-format cylindrical 4680-type Li-ion batteries are proposed to be studied non-destructively using high-resolution CT and XRD-CT supplying a pixel resolution below 1 µm to the object with radial dimensions of 46 mm. Studies will be carried out at different states of charge capable of following the anisotropic expansion of the cell in its inner and outer regions. Based on obtained CT data with sub-µm pixel resolution, the XRD-CT experiment, performed in the field-of-view manner, will allow to extract structural information of the chosen region-of-interest.