Non-destructive methods such as neutron depth profiling and solid state NMR are ideal for probing Li complex formation, accumulation and transport within the battery material during charge/discharge. Currently, our work is focused on understanding the effect of an electrochemical event to the materials’ storage properties. Specifically we report our recent work on the preferential Li nucleation, Li trapping, Li transport in intermetallic materials like LixSny, LixSiy and LixAly and evidence of formation and accumulation of a LiSn metastable phase that is correlated to capacity fade.

Revealing Li intermetallic transformations using operando neutrons and NMR methods

253rd National Meeting (2017)

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