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arXiv · 2010.02031

Rapid online solid-state battery diagnostics with optically pumped magnetometers

Yinan Hu·Geoffrey Z. Iwata·Lykourgos Bougas·John W. Blanchard·Arne Wickenbrock·Gerhard Jakob·Stephan Schwarz·Clemens Schwarzinger·Alexej Jerschow·Dmitry Budker
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Abstract

Solid state battery technology is motivated by the desire to deliver flexible power storage in a safe and efficient manner. The increasingly widespread use of batteries from mass-production facilities highlights the need for a rapid and sensitive diagnostic for identifying battery defects. We demonstrate the use of atomic magnetometry to measure the magnetic fields around miniature solid-state battery cells. These fields encode information about battery manufacturing defects, state of charge, impurities, or can provide important insights into ageing processes. Compared with SQUID-based magnetometry, the availability of atomic magnetometers, however, highlights the possibility for a low-cost, portable, and flexible implementation of battery quality-control and characterization technology.

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Yinan Hu, Geoffrey Z. Iwata, Lykourgos Bougas, John W. Blanchard, Arne Wickenbrock, Gerhard Jakob, Stephan Schwarz, Clemens Schwarzinger, Alexej Jerschow, Dmitry Budker. 2020-10-05. Rapid online solid-state battery diagnostics with optically pumped magnetometers. https://arxiv.org/abs/2010.02031

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