NMR Investigations of Crystalline and Glassy Solid Electrolytes for Lithium Batteries: A Brief Review

Abstract

The widespread use of energy storage for commercial products and services have led to great advancements in the field of lithium-based battery research. In particular, solid state lithium batteries show great promise for future commercial use, as solid electrolytes safely allow for the use of lithium-metal anodes, which can significantly increase the total energy density. Of the solid electrolytes, inorganic glass-ceramics and Li-based garnet electrolytes have received much attention in the past few years due to the high ionic conductivity achieved compared to polymer-based electrolytes. This review covers recent work on novel glassy and crystalline electrolyte materials, with a particular focus on the use of solid-state nuclear magnetic resonance spectroscopy for structural characterization and transport measurements.

Chemical stability of sulfide solid-state electrolytes: stability toward humid air and compatibility with solvents and binders

“…Nuclear magnetic resonance (NMR) is one of the many wellknown analytical techniques for its ability to perform structural characterization, usually using magic angle spinning (MAS) NMR. [176][177][178] It has become a crucial characterization approach for studying ionic movements and local structure at the atomic level in recent years, thanks to its established capacity to identify the local structure and ionic dynamics of individual nuclei. 179 Therefore, the effect of moisture, solvents, and binders on the structure of S-SEs can be studied using MAS NMR.…”

Ionic Liquid@Metal-Organic Framework as a Solid Electrolyte in a Lithium-Ion Battery: Current Performance and Perspective at Molecular Level

“…Some of the SSEs, such as SPE, still lack physical and chemical stability, which might be an issue in battery assembly [ 70 , 71 ]. Moreover, sluggish ionic diffusion in certain ICE might restrict charge–discharge rate capabilities [ 72 , 73 ]. Additionally, large volumetric changes may cause mechanical instability, which may disrupt the overall performance of LIBs [ 40 ].…”

Importance of multimodal characterization and influence of residual Li2S impurity in amorphous Li3PS4 inorganic electrolytes

“…The 1 H spectrum of Sample 25 showed several strong, broad peaks that were consistent with literature reports for LPS$THF complexation. 69 To complement the 1 H spectrum, the 7 Li spectrum of Sample 25 also shows broadening of the peak at 0.5 ppm in comparison to the unwashed sample. Introducing a solvent wash in addition to ball milling appears counterproductive as the high temperature solvent removal step as well as possible changes to the LPS phase eliminates the benets of ball milling and leads to a different LPS compound.…”