No reflections from the LIC were apparent, which may originate from the low weight fraction of the LIC (see Fig. -S4 and Tab. S1-S4 for details). Compared to the pristine NCA, LIC@NCA showed a subtle decrease in cell volume from 101.03 Å 3 to 100.97 Å 3 . Furthermore, the degree of Ni 2+ / Li + cation mixing (based on the c/a) remained similar for both samples indicating that the crystal structure of NCA remains unaltered after coating NCA particles with LIC. To prove the successful surface coating, SEM studies, on both pristine NCA and LIC@NCA, were conducted. Fig. and Fig. depicts the magnified SEM image of pristine NCA particles, where secondary NCA particles can be clearly observed. In contrast, the magnified SEM image (Fig. and Fig. ) of LIC@NCA shows an altered surface morphology with LIC nanoparticles covering the NCA particles surface suggesting a successful coating. The high shear forces created inside the mechanofusion container by high rotational speeds not only causes the particle rounding and coating of LIC nanoparticles onto the NCA particles surface but also enables homogenous and densified LIC coating. To evaluate the uniformity and density of the LIC coating, cross-sectional SEM studies have been performed. As shown in Fig. a ca. 180 nm thick, dense, and uniform LIC coating is evident. Further evidence is given by EDS mapping showing a uniform Cl and In distribution around the NCA particles (Fig. ).