IV-7 – Nuclear Magnetic Resonance in Solid State Ionics

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Organizers: Steve Greenbaum (City University of New York), Mallory Gobet (City University of New York).

Structural studies of materials containing mobile ions are often hampered by the lack of long-range order found in well-defined crystalline phases. Powder x-ray diffraction yields structural parameters that have been averaged over hundreds of lattice sites, and is unable to provide structural information about amorphous phases. On the other hand solid state nuclear magnetic resonance (NMR) methods have been productively employed to investigate structural and chemical aspects of electrodes, electrolytes, interfaces and interphases. NMR is element- (nuclear-) specific and sensitive to small variations in the immediate environment of the ions being probed, for example Li+, and in most cases is a reliably quantitative spectroscopy in that the integrated intensity of a particular spectral component is directly proportional to the number of nuclei in the corresponding material phase. NMR is also a powerful tool for probing ionic and molecular motion in solid electrolytes with a dynamic range spanning some ten orders of magnitude through spin-lattice relaxation and self-diffusion measurements, the latter which may also be conducted in the presence of a driving electric field. In fact, broadband relaxometry based on Fast Field Cycling NMR (FFCNMR) methods can span four to five of these orders of magnitude in a single set of measurements. Recent advances in magnetic resonance imaging and related operando methods also shed light on the mechanisms at play in a working battery.

This call is aimed at researchers in solid state ionics who use NMR to investigate structure and ion transport in materials under development for lithium batteries, “beyond lithium” batteries, and other electrochemical devices including but not limited to fuel cells and sensors. Invited and contributed speakers will address advances in NMR techniques, particularly those with relevance to SSI materials, and new materials development and investigation guided by NMR methods.

 

Abstracts are solicited in, but not necessarily limited to, the following areas:

In this Symposium are also welcome those contributions which cover the topics beyond the above-described areas. This is done to provide the audience with a comprehensive description of Solid State Ionics. If your contribution is difficult to host within the above areas, please do not hesitate to contact directly the Conference Chairmen at ssi21@dii.unipd.it for advice.

List of Invited Speakers

 

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