Using Simpleware ScanIP, the obtained 2D stack from nano-CT was segmented utilizing thresholding technique to convert the greyscale stack to a binary stack.
The process included segmenting the active material particles and pore-PVDF-carbon regions from the scan. If the weight percentage of the active material is high, the carbon material and polymer binder are randomly distributed in the electrode. To reconstruct the connected solid matrix, it was assumed that the carbon material is randomly distributed among the active material to provide electronic connectivity.
A morphological close filter was used in Simpleware ScanIP on the active material region to fuse the neighbouring active material together.