fig2

From: Full concentration gradient Li-rich layered oxides cathode materials via kinetic regulation of heterogeneous nucleation growth

Figure 2. Synthesis monitoring of the full-concentration-gradient cathode material. (A) SEM images of precursor particles collected at different reaction times during the synthesis process; (B) Particle size distributions of the precursors at different synthesis stages; (C) Surface elemental compositions of precursor particles collected at different reaction times, obtained from EDS analysis. SEM: Scanning electron microscopy; EDS: energy-dispersive X-ray spectroscopy.