In-depth structural characterization of the influence of Li + excess on spherical, Co-free layered LiMn 0.5 Ni 0.5 O 2 cathode material using correlative Raman–SEM microscopy

Structural evidence of a Li + induced phase segregation on particle level in Co-free layered Li–Mn–Ni-oxide cathode materials for Li-ion batteries is presented, illustrating the importance of correlative SEM–Raman microscopy in battery research.