Fig. 6: Mechanical performance and ammonia product collection.
From: Harnessing screw dislocations in shell-lattice metamaterials for efficient, stable electrocatalysts
a Compression stress-strain curve of dual-scale gyroid and commercial Ni foam with a consistent relative density of ~7%. The inserted finite element analysis result shows the stress distribution during deformation. The color scale indicates the von Mises stress range. in situ SEM uniaxial compression deformation experiment revealing the homogeneous deformation behavior of b FeCoNi dual-scale gyroid metamaterials and c Ni foam. Scale bar: 1 mm. d Ashby map of specific compression strength versus density and e energy absorption per unit volume versus density of dual-scale gyroid metamaterials compared to reported metamaterials43,44,45,46,47,48,49,50,51. f Schematical illustration of a three-chamber reactor assembled with the flow-through NO3− reduction electrolyzer and a membrane-based ammonia absorption unit. g Long-term stability test of metamaterials catalyst. h Generated NH4Cl powder and corresponding XRD result. i Typical characteristics of different 3D-printed catalytic electrodes and conventional foam electrodes. Source data are provided as a Source Data file.
