Investigation of Phase Transition Behavior upon Cathode Material NCM Firing

Introduction

Cathode materials are known for being synthesizable through firing using the solid-phase method. With in-situ XRD measurement, it is possible to investigate the firing process in detail by performing measurements while increasing the temperature of the samples.

Crystal phase analysis

• Analysis: Cathode material
• Analysis method: Qualitative analysis
• Use: Optimizing electrochemical performance 
• Analyzed materials: Li(Ni_xCo_yMn_z)O₂, NCM
• Instrument: SmartLab, SmartLab SE

Figure 1: XRD profile at various temperatures
(The raw material powder reacts from 600°C and becomes NCM units at 1000°C)

Conclusion

It is possible to capture a solid-state reaction during the sintering process. By examining firing conditions in this fashion, appropriate temperatures and times can be determined.