After the graphite/Si microstructural model is generated, the CGMD structure is first voxelated with an in house program and converted to image stacks with voxels sizes of 0.25×0.25×0.25 μm 3 , a little bit smaller than the Si particles. First, it was realized that due to the overlaps between the graphite particles, the meshed structure resulted in a rigid graphite matrix that would not displace the particles as a result of the Si expansion. Therefore, in order to guarantee the free movement of graphite particles, the overlap regions where removed by making sure that at least a 0.5 μm gap existed between them, as shown in the meshed electrode in Figure . The AM particles were then dilated in order to compensate for the lost volume due to the cutting.