Fig. 5: HR-TEM images and EDS Mapping of Ni of LNO samples.

a LNO-F, b LNO-R, c LNO-U5, and d LNO-U24 represent fresh, H2-reduced, used after 5 h time on stream and used after 24 h time on stream LaNi0.1Cr0.9O3 samples, respectively. The 1st row: HR-TEM images, the 2nd row: magnified HR-TEM images corresponding to the green squares in the 1st row, and the 3rd row: EDS Mapping of Ni corresponding to the HR-TEM images in the 1st row. The regions marked by green squares in (b, c) are Ni-rich.