Jump to main content
Jump to site search


Long-run in operando NMR to investigate the evolution and degradation of battery cells

Abstract

To improve the lifetime of lithium-ion batteries, a detailed understanding of degradation mechanisms is essential. Nuclear magnetic resonance (NMR) is able to unravel reversible as well as irreversible transient changes of composition, shape and morphology in a battery cell. Using a newly developed cylindrical battery container free of metallic components in combination with a numerically optimized saddle coil, in operando NMR investigations of battery cells over hundreds of charge/discharge cycles are presented. Alternating with NMR data acquisition, electrochemical impedance spectra (EIS) can be recorded, which enables correlative analysis of the two techniques. Long-run in operando NMR measurements on a Li metal vs. graphite cell reveal the formation and evolution of mossy and dendritic Li microstructures over a period of 1000 h, which illustrates the capabilities of NMR to identify dendrite mitigation strategies in cells operated under realistic conditions.

Back to tab navigation

Publication details

The article was received on 14 Feb 2018, accepted on 16 Apr 2018 and first published on 17 Apr 2018


Article type: Paper
DOI: 10.1039/C8CP01067F
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
  •   Request permissions

    Long-run in operando NMR to investigate the evolution and degradation of battery cells

    S. Kayser, A. Mester, A. Mertens, P. Jakes, R. Eichel and J. Granwehr, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C8CP01067F

Search articles by author

Spotlight

Advertisements