Fig. 1: Initial structure of the LRM material. | Nature Communications

Fig. 1: Initial structure of the LRM material.

From: Twinning mediated intralayer frustration governs structural degradation in layered Li-rich oxide cathode

Fig. 1

a NPD and Rietveld refinement analysis of pristine LRM powder. The inset sector plot shows the phase fraction distribution. b 4D-STEM results. Left to right: Virtual bright-field image, phase map and orientation map of a pristine LRM nanoparticle. Purple regions in the phase map denote the O3’ phase, blue regions the spinel phase and green regions amorphous C domains. c Low-magnification HAADF-STEM image of a pristine LRM particle. d High-resolution HAADF-STEM image of the marked area in (c), showing the atomic arrangement in the pristine LRM cathode, which exhibits structural domains in the O3’ phase. The areas marked A (green), B (blue) and C (pink) correspond to domains projected along [110], [\(\bar{1}\)00] and [1\(\bar{1}\)0], respectively. e Schematic diagram of the O3’ phase, showing different types of structural domains.

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