A sliding-algorithm traversed the high-resolution threedimensional nano-CT images. Sets of three adjacent pixels were averaged after sliding in each direction one-byone. Whenever the average value surpassed a threshold value of 0.5, it was taken as the center of an element of the realistic particle. Such particles will be denoted as primary particles and can be thought of as a monocrystalline structure within the poly-crystalline NMC. The methodology employed resulted in coarser shapes, represented in Figure . A higher resolution can be employed in the simulation if it is desired. Ultimately, the realistic shapes of the AM particles where approximated by the use of a multisphere method, in which particle shapes are approximated by a number of overlapping spheres, whose centers are fixed relative to each other, by the use of