Focus on battery research with XRD: Crystalline phase analysis of Li ion battery electrode materials
Lithium-ion batteries have revolutionized renewable energy storage technology, not only for portable phones but also for storage in electric grid and the automotive sector. High efficiency, long life cycle and high energy density are the most desirable characteristics of high-performance batteries. The important critical parameters which influence the battery performance are primary particle size and crystalline phases of the electrode materials. These parameters can be extracted from the data collected using X-ray diffractometry.
The X-ray diffraction (XRD) technique is a non-destructive technique and heavily used in laboratory work for various applications such as identification and quantification of crystalline phases and average crystallite size analysis of synthesized powder materials. The extracted crystallographic information such as interlayer spacing can be used to calculate the degree of graphitization or the orientation index in graphite battery anode materials.
In this study, we will investigate the Li-ion battery, LMFP (LiMnxFe1-x(PO4)) cathode materials with varying Mn content from 0 to 0.8, and some synthetic graphite (anode) samples using the Aeris bench-top X-ray diffractometer. Furthermore, the investigation of the correlation to crystallite size with the primary particle size of cathode materials using the Ultra Small Angle X-ray Scattering (USAXS) technique on the Empyrean Nano edition X-ray diffractometer will also be briefly discussed.