Fig. 5: Electrochemical and structural stability.
From: Grain boundary engineering for efficient and durable electrocatalysis
a Durability measurements of Au NPs, L-Au NAs, M-Au NAs and H-Au NAs at a fixed disk potential of 0.35 V. b Calculated H2O2 selectivity after durability tests. HAADF-STEM images of (c) L-Au NAs and (d) H-Au NAs after durability tests. A 2 nm thin-sliced tomogram from a 3D atom map (Supplementary Figs. S34, S37) of (e) L-Au NAs and (h) H-Au NAs (iso-composition surface >90 at.% Au). Extracted GB tomogram of (f) L-Au NAs and (i) H-Au NAs of the region delineated by the box (isodensity surface of 150 Au atoms/nm3). The orange spheres represent B atoms. 1D compositional profiles of identified Au and B elements of (g) L-Au NAs and (j) H-Au NAs along the direction indicated by the arrow. Error bars indicate the standard deviation from a minimum of three independent measurements. Source data are provided as a Source Data file.
