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Multinuclear Mr and MrI study of lithium-ion cells using a variable field magnet and a fixed frequency rF probe

Magnetic resonance Letters 2024年第1期4卷 10-20页

作者： Andrés ramírez Aguilera Florin Marica Kevin J.Sanders Md Al raihan C.Adam Dyker gillian r.goward Bruce *** UNB MrI Centre Department of PhysicsUniversity of New BrunswickFrederictonNew BrunswickE3B 5A3Canada Department of Chemistry McMaster UniversityHamiltonOntarioL8S 4L8Canada Department of Chemistry University of New BrunswickFrederictonNew BrunswickE3B 5A3Canada

An exploratory multinuclear magnetic resonance(Mr)and magnetic resonance imaging(MrI)study was performed on lithium-ion battery cells with ^(7)Li,^(19)F,and ^(1)H measurements.A variable field superconducting magnet with a fixed frequency parallel-plate radiofrequency(rF)probe was employed in the *** magnetic field was changed to set the resonance frequency of each nucleus to the fixed rF probe frequency of 33.7 *** cartridge-like lithium-ion cells,with graphite anodes and LiNi_(0.5)Mn_(0.3)Co_(0.2)O_(2)(NMC)cathodes,were *** cell was pristine,and one was charged to a cell voltage of 4.2 *** results presented demonstrate the great potential of the variable field magnet approach in multinuclear measurement of lithium-ion *** methods open the door for developing faster and simpler methods for detecting,quantifying,and interpreting Mr and MrI data from lithium-ion and other batteries.

关键词： Multinuclear Mr/MrI Variable field magnet Lithium-ion battery Parallel-plate rf probe

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The parallel-plate resonator:An rF probe for Mr and MrI studies over a wide frequency range

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Magnetic resonance Letters 2023年第4期3卷 306-318页

作者： Andres ramírez Aguilera Kevin J.Sanders gillian r.goward Bruce *** UNB MrI Centre Department of PhysicsUniversity of New BrunswickFrederictonNew BrunswickE3B 5A3Canada Department of Chemistry McMaster UniversityHamiltonOntarioL8S 4L8Canada

We explore the use of the parallel-plate resonator for the study of thin cuboid samples over a wide range of magnetic resonance *** parallel-plate resonator functions at frequencies from tens to hundreds of *** parallel-plate resonators are presented and discussed in a frequency range from 8 to 500 *** resonance experiments were performed on both horizontal and vertical bore magnet systems with lithium and hydrogen ***-plate radiofrequency(rF)probes are easy to build and easy to *** and simulations showed good sensitivity of the parallel-plate rF probe geometry with a small decrease in sensitivity at higher frequencies.

关键词： Parallel-plate resonator Optimization Magnetic resonance/magnetic resonance imaging(Mr/MrI) Batteries

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