Lattice Constant and Crystallite Diameter Management for NCM Cathode Material

Introduction

With cathode material NCM, the lattice constant changes according to the composition, and electrical performance changes according to crystallite diameter. Because of these factors, lattice constant and crystallite diameter management is required to optimize this material. Using the EasyX plug-in for SmartLab Studio II software makes it possible to perform everything from measurement to results management with simple operations.

Crystal phase analysis

• Analysis: Processed materials
• Analysis method: Rietveld analysis
• Use: Quality assurance 
• Analyzed materials: Li(Ni_xCo_yMnz)O₂, NCM
• Instrument: MiniFlex XpC

Figure 1: EasyX measurement screen

Executed in three steps:

1. Select measurement sample
2. Select measurement analysis conditions
3. Press the Start button

Figure 2: EasyX results display screen (Arbitrary items such as the lattice constant and crystallite diameter can be designated)

Conclusion

EasyX can be operated with ease even by people who lack familiarity with XRD. Measurement, analysis and results display can be managed and analyzed through the software.