In Operando Diffraction Radiography and Tomography on Li-Ion Batteries

Abstract

Diffraction radiography and tomography were used to study different commercial Li-ion batteries. Depending on the data processing either 'direct' parameters, such as phase distributions, or more abstract, derived parameters, like degree of lithiation of the graphite anode or even local state of charge, can be extracted. Especially the lithium distribution is an interesting parameter and is surprisingly inhomogeneous throughout the volume of a commercial battery cell.