NDLI: Battery Characterization via Eddy-Current Imaging with Nitrogen-Vacancy Centers in Diamond

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Battery Characterization via Eddy-Current Imaging with Nitrogen-Vacancy Centers in Diamond

Content Provider	MDPI
Author	Zhang, Xue Chatzidrosos, Georgios Hu, Yinan Zheng, Huijie Wickenbrock, Arne Jerschow, Alexej Budker, Dmitry
Copyright Year	2021
Description	Sensitive and accurate diagnostic technologies with magnetic sensors are of great importance for identifying and localizing defects of rechargeable solid batteries using noninvasive detection. We demonstrate a microwave-free alternating current (AC) magnetometry method with negatively charged NV centers in diamond based on a cross-relaxation feature between nitrogen-vacancy (NV) centers and individual substitutional nitrogen (P1) centers occurring at 51.2 mT. We apply the technique to non-destructively image solid-state batteries. 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 μμμ $360$ . 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.
Starting Page	3069
e-ISSN	20763417
DOI	10.3390/app11073069
Journal	Applied Sciences
Issue Number	7
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-03-30
Access Restriction	Open
Subject Keyword	Applied Sciences Nuclear Energy and Engineering Battery Diagnostics Nv-centers in Diamond Eddy Current Imaging Nondestructive Evaluation
Content Type	Text
Resource Type	Article

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