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Title: Probe for operando in situ electrochemical nuclear magnetic resonance spectroscopy

Abstract

Electrochemical devices with metal casings have been considered incompatible with nuclear magnetic resonance (NMR) spectroscopy because the oscillating magnetic fields (“rf fields”) responsible for excitation and detection of NMR active nuclei do not penetrate metals. According to the present invention, rf fields can still efficiently penetrate into nonmetallic layers of electrochemical cells (such as a coin cell battery configuration) provided the magnetic field is oriented tangentially to the electrochemical cell electrodes in a “skimming” orientation. As an example, noninvasive high field in situ 7Li and 19F NMR of an unmodified commercial off-the-shelf rechargeable coin cell was demonstrated using a traditional external NMR coil setup. The in operando NMR measurements revealed that irreversible physical changes accumulate at the anode during electrochemical cycling.

Inventors:
; ; ;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1892507
Patent Number(s):
11215686
Application Number:
17/165,099
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM); ABQMR, Inc. (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
DOE Contract Number:  
NA0003525
Resource Type:
Patent
Resource Relation:
Patent File Date: 02/02/2021
Country of Publication:
United States
Language:
English

Citation Formats

Sorte, Eric Glenn, Conradi, Mark S., Walder, Brennan J., and Alam, Todd M. Probe for operando in situ electrochemical nuclear magnetic resonance spectroscopy. United States: N. p., 2022. Web.
Sorte, Eric Glenn, Conradi, Mark S., Walder, Brennan J., & Alam, Todd M. Probe for operando in situ electrochemical nuclear magnetic resonance spectroscopy. United States.
Sorte, Eric Glenn, Conradi, Mark S., Walder, Brennan J., and Alam, Todd M. Tue . "Probe for operando in situ electrochemical nuclear magnetic resonance spectroscopy". United States. https://www.osti.gov/servlets/purl/1892507.
@article{osti_1892507,
title = {Probe for operando in situ electrochemical nuclear magnetic resonance spectroscopy},
author = {Sorte, Eric Glenn and Conradi, Mark S. and Walder, Brennan J. and Alam, Todd M.},
abstractNote = {Electrochemical devices with metal casings have been considered incompatible with nuclear magnetic resonance (NMR) spectroscopy because the oscillating magnetic fields (“rf fields”) responsible for excitation and detection of NMR active nuclei do not penetrate metals. According to the present invention, rf fields can still efficiently penetrate into nonmetallic layers of electrochemical cells (such as a coin cell battery configuration) provided the magnetic field is oriented tangentially to the electrochemical cell electrodes in a “skimming” orientation. As an example, noninvasive high field in situ 7Li and 19F NMR of an unmodified commercial off-the-shelf rechargeable coin cell was demonstrated using a traditional external NMR coil setup. The in operando NMR measurements revealed that irreversible physical changes accumulate at the anode during electrochemical cycling.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {1}
}

Works referenced in this record:

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