Structural aspects of lithium insertion in transition metal oxide electrodes

There is a considerable lack of detailed information on the structure of lithiated phases of popular-consensus positive electrode materials for lithium/polymer and lithium-ion/polymer batteries. Having illustrated this phenomenon for the specific cases of LiMn2O4 and V6O13, some suggestions are made to present the problem in a more general context. The need for single-crystal diffraction studies is indicated.