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. 2017 Jan 16;8:14101. doi: 10.1038/ncomms14101

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Copyright © 2017, The Author(s)

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Cross-sectional SEM images of secondary particles from (a) the pristine material and (b) the cycled one (100 cycles at the high cutoff voltage of 4.7 V). (c) and (d) are HAADF images from cycled LiNi_1/3Mn_1/3Co_1/3O₂ cathode particles, showing intragranular cracks along (001) plane. The yellow arrows indicate real cracks and the pink arrows indicate incubation cracks. Scale bars, 5 μm (a,b); 50 nm (c); and 10 nm (d).