TY - JOUR
T1 - Mapping oscillating magnetic fields around rechargeable batteries
AU - Benders, Stefan
AU - Mohammadi, Mohaddese
AU - Ganter, Matthew J.
AU - Klug, Christopher A.
AU - Jerschow, Alexej
N1 - Funding Information:
This work was supported the US National Science Foundation under award CBET 1804723. Furthermore, the authors like to thank Leeor Alon for fruitful discussions. CAK acknowledges support for this research from the Office of Naval Research (ONR) through the base program NRL core funding.
Funding Information:
This work was supported the US National Science Foundation under award CBET 1804723. Furthermore, the authors like to thank Leeor Alon for fruitful discussions. CAK acknowledges support for this research from the Office of Naval Research (ONR) through the base program NRL core funding.
Publisher Copyright:
© 2020 Elsevier Inc.
PY - 2020/10
Y1 - 2020/10
N2 - Power storage devices such as batteries are a crucial part of modern technology. The development and use of batteries has accelerated in the past decades, yet there are only a few techniques that allow gathering vital information from battery cells in a nonivasive fashion. A widely used technique to investigate batteries is electrical impedance spectroscopy (EIS), which provides information on how the impedance of a cell changes as a function of the frequency of applied alternating currents. Building on recent developments of inside-out MRI (ioMRI), a technique is presented here which produces spatially-resolved maps of the oscillating magnetic fields originating from the alternating electrical currents distributed within a cell. The technique works by using an MRI pulse sequence synchronized with a gated alternating current applied to the cell terminals. The approach is benchmarked with a current-carrying wire coil, and demonstrated with commercial and prototype lithium-ion cells. Marked changes in the fields are observed for different cell types.
AB - Power storage devices such as batteries are a crucial part of modern technology. The development and use of batteries has accelerated in the past decades, yet there are only a few techniques that allow gathering vital information from battery cells in a nonivasive fashion. A widely used technique to investigate batteries is electrical impedance spectroscopy (EIS), which provides information on how the impedance of a cell changes as a function of the frequency of applied alternating currents. Building on recent developments of inside-out MRI (ioMRI), a technique is presented here which produces spatially-resolved maps of the oscillating magnetic fields originating from the alternating electrical currents distributed within a cell. The technique works by using an MRI pulse sequence synchronized with a gated alternating current applied to the cell terminals. The approach is benchmarked with a current-carrying wire coil, and demonstrated with commercial and prototype lithium-ion cells. Marked changes in the fields are observed for different cell types.
KW - Alternating current
KW - Current imaging
KW - Oscillating field
KW - Rechargeable batteries
KW - Triggered acquisition
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U2 - 10.1016/j.jmr.2020.106811
DO - 10.1016/j.jmr.2020.106811
M3 - Article
C2 - 32920429
AN - SCOPUS:85090403699
SN - 1090-7807
VL - 319
JO - Journal of Magnetic Resonance
JF - Journal of Magnetic Resonance
M1 - 106811
ER -