SEM images of P2- and P3-NMC (Figure 3) showed irregular-shaped polygonal particles with a size of a few micrometers made up of the aggregation of flaky particles with smaller dimensions. The sample morphologies are almost similar, but the particle size of P2-NMC is relatively larger than P3-NMC due to higher calcined temperature. EDS images of element contribution confirm the presence of all essential elements in the samples.