Figure 1: Electrochemical performance and observations of fracture.
(a) Specific capacity as a function of cycle number, revealing the Li/LiNi1/3Mn1/3Co1/3O2 half cell’s capacity fading has strong dependence on the high cutoff voltages, (b–d) charge/discharge profiles of Li/LiNi1/3Mn1/3Co1/3O2 half cells at different high cutoff voltages, and (e–g) low magnification HAADF images of LiNi1/3Mn1/3Co1/3O2 after 100 cycles at different high cutoff voltages. The red arrows indicate voids and the yellow arrows in g indicate intragranular cracks. Scale bars, 500 nm (e–g).
