Report for in-situ 7Li NMR experiment in PNNL Phase -1
- Pacific Northwest National Laboratory
To understand the detailed local structural evolution, an in-situ 7Li NMR study was performed. An operando identification of the lithium germanide phases under various cycling regimens permitted understanding of the kinetics of phase transition between different structural phases, including the amorphous phases, and how these correlated with capacity retention. Combining data from TEM and in-situ 7Li NMR, we discovered that the phase inter-conversion during cycling was mediated by co-existing amorphous and crystalline phases, and that the high capacity observed was correlated with an over-lithiated lithium germanide phase.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- DEAC0576RL01830
- OSTI ID:
- 1158859
- Report Number(s):
- PNNL-ACT-10015
- Country of Publication:
- United States
- Language:
- English
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