Development of novel materials for energy storage and conversion (e.g. in batteries, supercapacitors, and fuel cells) requires detailed understanding of fundamental relationships between structure and bulk properties, such as electronic and ionic conductivity. Often, the underlying mechanisms occur at the local atomic level, and are not accessible by probes of long-range order, such as diffraction-based techniques. By contrast, as a direct probe of the environments of atomic nuclei, solid-state nuclear magnetic resonance (NMR) can report on local structure and dynamics with relevance to understanding electronic and structural phase transitions and ionic diffusion on a wide range of time scales. In my talk I will demonstrate how multinuclear NMR spectroscopy is used in the Grey group for the characterisation of electrode materials for lithium and sodium ion batteries. Both ex situ and in situ NMR methods are employed, and it is the conjunction of these two approaches with other characterization techniques and DFT computation which yields the most useful and relevant information.

Novel electrode materials for Li and Na ion batteries investigated by use of ex-situ and in-situ solid-state NMR spectroscopy

255th National Meeting (2018)

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