The trajectory of a single O 2 molecule over 60 ps shown along the three different crystallographic axes; red circles show the position of the O atoms in the O 2 molecule every 200 fs. The O 2 molecule moves between layers, indicating that oxygen diffusion is possible through stacked voids. Green, blue and orange circles show Li +, Mn and lattice O ions, respectively. Blue shading shows MnO 6 octahedra.
