6533b837fe1ef96bd12a27fe
RESEARCH PRODUCT
Battery characterization via eddy-current imaging with nitrogen-vacancy centers in diamond
Alexej JerschowHuijie ZhengHuijie ZhengDmitry BudkerDmitry BudkerDmitry BudkerYinan HuYinan HuArne WickenbrockArne WickenbrockXue ZhangXue ZhangGeorgios ChatzidrososGeorgios Chatzidrosossubject
Battery (electricity)Materials scienceMagnetometerFOS: Physical sciences02 engineering and technologyApplied Physics (physics.app-ph)engineering.materiallcsh:Technology01 natural scienceslaw.inventionlcsh:ChemistrylawVacancy defecteddy current imaging0103 physical sciencesEddy currentGeneral Materials Science010306 general physicsNV-centers in diamondlcsh:QH301-705.5Instrumentationnondestructive evaluationFluid Flow and Transfer Processeslcsh:Tbusiness.industryProcess Chemistry and TechnologyGeneral EngineeringDiamond600Physics - Applied Physics021001 nanoscience & nanotechnologylcsh:QC1-999Computer Science ApplicationsMagnetic fieldlcsh:Biology (General)lcsh:QD1-999lcsh:TA1-2040Electrodebattery diagnosticsengineeringOptoelectronicslcsh:Engineering (General). Civil engineering (General)0210 nano-technologyAlternating currentbusinessddc:600lcsh:Physicsdescription
Sensitive and accurate diagnostic technologies with magnetic sensors are of great importance for identifying and localizing defects of rechargeable solid batteries in a noninvasive detection. We demonstrate a microwave-free AC magnetometry method with negatively charged NV centers in diamond based on a cross-relaxation feature between NV centers and individual substitutional nitrogen (P1) centers occurring at 51.2 mT. We apply the technique to non-destructive solid-state battery imaging. By detecting the eddy-current-induced magnetic field of the battery, we distinguish a defect on the external electrode and identify structural anomalies within the battery body. The achieved spatial resolution is $360\,\mu\rm m$. The maximum magnetic field and phase shift generated by the battery at the modulation frequency of 5 kHz are estimated as 0.04 mT and 0.03 rad respectively.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-02-22 |