Fig. 2: Correlation between primary particle morphology and full cell performance.
From: Transition metal-doped Ni-rich layered cathode materials for durable Li-ion batteries
a Cross-sectional SEM images of as-synthesized cathode particles that show the morphology and orientation differences between the polygonal grains of NC90, Mg-NC90, and Al-NC90, and the elongated grains of Ti-NC90, Ta-NC90, and Mo-NC90. Quantitative analysis results of the cathode grains and their orientations. b Relationship between aspect ratio and relative grain orientation, c aspect ratio (length/width), and d grain size as a function of oxidation state. Summaries of the capacity retention values after 1000 cycles as functions of average e angle of primary particle, f aspect ratio, and g grain size.
