Fig. 3: Atomic configuration in the SCL.

a ABF-STEM image of the vicinity of a grain-boundary core. The grain at the right was observed along <110 > p. b–e Enlarged ABF-STEM images of regions I (b), II (c), and III (d) in a, along with one taken from the bulk (e). The magnifications of these enlarged images are the same. For clarity, the images are presented in false colors. The Ti-O bonds are represented by the black lines. The interstitial Li are arrowed in red. The Ti-O-Ti angels were determined by CalAtom.