1 research outputs found
Lithium cobalt(II) pyrophosphate, Li1.86CoP2O7, from synchrotron X-ray powder data
Structure refinement of high-resolution X-ray powder diffraction data of the title compound gave the composition Li1.865CoP2O7, which is also verified by the ICP measurement. Two Co sites exist in the structure: one is a CoO5 square pyramid and the other is a CoO6 octaÂhedron. They share edges and are further interÂconnected through P2O7 groups, forming a three-dimensional framework, which exhibits different kinds of interÂsecting tunnels containing Li cations and could be of great interÂest in Li ion battery chemistry. The structure also exhibits cation disorder with 13.5% Co residing at the lithium (Li1) site. Co seems to have an average oxidation state of 2.135, as obtained from the strutural stochiometry that closely supports the magnetic susceptibility findings