Fig. 3: Isotropic hardening parameter α, a measure of accumulated plastic strain, for the anodes studied at complete lithiation.
From: Topology-enhanced mechanical stability of swelling nanoporous electrodes

(Top row) Sphere, short neck barbell, and long neck barbell. (Middle row) Low-genus particle, shown from three perspectives. (Bottom row) High-genus particle, shown from three perspectives. All anodes are shown in the deformed configuration. The distribution of α was symmetric on the surface of the sphere and on the spherical ends of the barbells. Plastic strain concentration did occur at the joints between sphere and neck in the barbells. For the nanoporous anodes, the bulbous regions experienced the largest plastic strains, with particular concentration on inner surfaces. No V-shaped notches formed in any of the specimens.