Fig. 2

Morphological and structural analyses of LAF-LCO. a, b SEM images of 2% LAF-LCO particles at different magnifications. Scale bar: 5 μm and 2 μm, respectively. c, d TEM images of 2% LAF coating layers and MO nanoparticles. Scale bar: 20 nm. e High magnified TEM image of 2% LAF-LCO with MO nanoparticles. Scale bar: 1 μm. f EDS elemental maps of Al, F, O, and Co, which corresponds to e. Scale bar: 1 μm. g, h High magnified TEM images of bare LCO and 2% LAF-LCO, respectively. Scale bar: 200 nm. i, j High resolution TEM images of the selected regions in g, h, respectively. Scale bar: 5 nm. k, l Electron diffraction patterns of marked region 1 and 2 in i, and 3 and 4 in j, respectively