ArticleProceedings of the National Academy of Sciences of the United States of America2020
Sensitive magnetometry reveals inhomogeneities in charge storage and weak transient internal currents in Li-ion cells.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Enabling nondestructive observation of electrolyte composition in batteries with ultralow-field nuclear magnetic resonance.Chemical science · 2026Article
- Magnetic microscopy for operando imaging of battery dynamics.Nature communications · 2025Review
- Article
- Adaptive cold-atom magnetometry mitigating the trade-off between sensitivity and dynamic range.Science advances · 2025Article
- Three-dimensional electrochemical-magnetic-thermal coupling model for lithium-ion batteries and its application in battery health monitoring and fault diagnosis.Scientific reports · 2024Article
- Magnetic resonance imaging techniques for lithium-ion batteries: Principles and applications.Magnetic resonance letters · 2024Review
- Multiscale Imaging Techniques for Real-Time, Noninvasive Diagnosis of Li-Ion Battery Failures.Small science · 2023Article
- Quantum magnetic gradiometer with entangled twin light beams.Science advances · 2023Article
- Power Batteries Health Monitoring: A Magnetic Imaging Method Based on Magnetoelectric Sensors.Materials (Basel, Switzerland) · 2022Article
Corrections and comments
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Authors and funding
8 authors.
Funding
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Abstract
The ever-increasing demand for high-capacity rechargeable batteries highlights the need for sensitive and accurate diagnostic technology for determining the state of a cell, for identifying and localizing defects, and for sensing capacity loss mechanisms. Here, we leverage atomic magnetometry to map the weak induced magnetic fields around Li-ion battery cells in a magnetically shielded environment. The ability to rapidly measure cells nondestructively allows testing even commercial cells in their actual operating conditions, as a function of state of charge. These measurements provide maps of the magnetic susceptibility of the cell, which follow trends characteristic for the battery materials under study upon discharge. In particular, hot spots of charge storage are identified. In addition, the measurements reveal the capability to measure transient internal current effects, at a level of μA, which are shown to be dependent upon the state of charge. These effects highlight noncontact battery characterization opportunities. The diagnostic power of this technique could be used for the assessment of cells in research, quality control, or during operation, and could help uncover details of charge storage and failure processes in cells.
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