Methods for Tomographic Segmentation in Pseudo-Cylindrical Coordinates for Bobbin-Type Batteries

High-resolution X-ray computed tomography (CT) has become an invaluable tool in battery research for its ability to probe phase distributions sealed samples. The Cartesian coordinates used describing the CT image stack are not appropriate understanding radial dependencies, like that seen bobbin-type batteries. most prominent of these batteries is alkaline Zn–MnO2, which dominates primary market. To understand material dependencies within batteries, a method presented approximate data into pseudo-cylindrical coordinates. This important because volume fractions output computational models, and this will allow correlation model data. A selection 10 anodes inside Zn–MnO2 AA demonstrate method. For these, pseudo-radius defined as relative distance anode between central current collecting pin separator. Using anodes, we validate results averaged one-dimensional profiles that, when compared other methods, show better quantitative match individual local slices polar θ-direction. methods tested average absolute center point based on either or also corrects slight asymmetries observed often slightly off-center separator noncircular shape.