Battery knowledge · Materials analysis and post-mortem
X-ray diffraction
Identifying crystal structures from the angles at which they scatter X-rays. It tracks lithium content and phase changes in electrode materials, and operando XRD follows them while the cell cycles. [1]
- Abbreviation
- XRD
Example
Materials analysis and post-mortem: an example situation
Surface and bulk measurements may find different compositions in the same electrode without contradiction.
Read X-ray diffraction alongside Phase transition in this context. A change of crystal structure as lithium content varies, which fixes the potential while two phases coexist. Graphite fills in stages, LFP switches between two phases across almost its whole range, and these transitions make the peaks that aging diagnostics read.
Use in Lemonergy
Connect results with scale and specimen preparation.
This is a reference concept. No executable Lemonergy block has been verified for this term.
References & further reading
Technical references
- Advanced characterization techniques for solid state lithium battery research
Yuxuan Xiang, Xia Li, Yongqiang Cheng, Xueliang Sun, Yong Yang · Materials Today · 2020
Technical reference · X-ray, solid-state NMR and neutron methods in solid-state battery research.