Fig. 6
From: Microscopic mechanism of biphasic interface relaxation in lithium iron phosphate after delithiation
Changes in boundary planes between FePO4 and the intermediate region during relaxation. a Magnified view of the Li concentration map of the region enclosed by the dotted rectangles in Fig. 5b–d (from left to right) 11.5, 32 and 79 h after delithiation. b Superimposed binarised images of the region in a 11.5 h (white), 32 h (green) and 79 h (magenta) after delithiation. c Magnified view of the Li concentration map of the region enclosed by the dotted rectangle in Supplementary Fig. 4 (from left to right) 14, 30 and 77 h after delithiation. d Superimposed binarised images of the region in c 14 h (white), 30 h (green) and 77 h (magenta) after delithiation. In the binarised images, “FePO4” was taken to correspond to Li vacancy concentrations between 0.75 and 1.05. Scale bar, 50 nm
