Fig. 4: Maximum tensile stress σ1 at different stages of lithiation.
From: Topology-enhanced mechanical stability of swelling nanoporous electrodes
The red volume shows the 5% of elements in the finite element mesh with the largest values of σ1, while black arrows are the corresponding stress directions. The blue surface indicates the ψ = 1/2 isosurface, which marks the boundary between lithiated and unlithiated material. For the sphere, for ease of visibility we instead depict a slice through the middle of the specimen; here, the ψ = 1/2 boundary is shown as a blue contour. Anodes are shown in the deformed configuration.
