Fig. 6: Schematic and characterization of chemo-mechanical degradation in uncoated SC-NMC particles after high-voltage cycling. | Nature Communications

Fig. 6: Schematic and characterization of chemo-mechanical degradation in uncoated SC-NMC particles after high-voltage cycling.

From: Eliminating chemo-mechanical degradation of lithium solid-state battery cathodes during >4.5 V cycling using amorphous Nb2O5 coatings

Fig. 6

A Schematic showing the onset of lattice gliding, subsequent microcrack formation, and its growth in (sub)surface and intra-particle cracking. B HAADF-STEM image of uncoated SC-NMC particle after 500 cycles at 1C rate (3 mA·cm−2) and a voltage limit of 4.7 V vs Li/Li+ shows a serrated surface resulting from lattice gliding and (sub)surface cracking. C Zoomed-in images of the cracks highlighted by the white box in (B) and FFTs from different marked regions. FIB-SEM cross-section images of uncoated SC-NMC electrode after 500 cycles at a 1C rate (3 mA·cm−2) and a voltage limit of 4.7 V vs Li/Li+ showing (D) (sub)surface and (E) intra-particle cracks.

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