Ramírez Aguilera Andrés, Marica Florin, Sanders Kevin J, Al Raihan Md, Dyker C Adam, Goward Gillian R, Balcom Bruce J
UNB MRI Centre, Department of Physics, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada.
Department of Chemistry, McMaster University, Hamilton, Ontario, L8S 4L8, Canada.
Magn Reson Lett. 2023 Dec 11;4(1):100090. doi: 10.1016/j.mrl.2023.11.002. eCollection 2024 Feb.
An exploratory multinuclear magnetic resonance (MR) and magnetic resonance imaging (MRI) study was performed on lithium-ion battery cells with Li, F, and H measurements. A variable field superconducting magnet with a fixed frequency parallel-plate radiofrequency (RF) probe was employed in the study. The magnetic field was changed to set the resonance frequency of each nucleus to the fixed RF probe frequency of 33.7 MHz. Two cartridge-like lithium-ion cells, with graphite anodes and LiNiMnCoO (NMC) cathodes, were interrogated. One cell was pristine, and one was charged to a cell voltage of 4.2 V. The results presented demonstrate the great potential of the variable field magnet approach in multinuclear measurement of lithium-ion batteries. These 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.
对锂离子电池进行了一项探索性的多核磁共振（MR）和磁共振成像（MRI）研究，测量了锂、氟和氢。该研究采用了一个带有固定频率平行板射频（RF）探头的可变磁场超导磁体。改变磁场，使每个原子核的共振频率与33.7MHz的固定RF探头频率匹配。研究了两个类似盒式的锂离子电池，一个是石墨阳极和锂镍锰钴氧化物（NMC）阴极的原始电池，另一个充电至4.2V的电池电压。结果表明，可变磁场磁体方法在锂离子电池多核测量中具有巨大潜力。这些方法为开发更快、更简单的方法来检测、量化和解释来自锂离子电池及其他电池的MR和MRI数据打开了大门。
